diff --git a/.travis.yml b/.travis.yml
index fe2fb759..dbcc6d0c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,37 +2,42 @@ language: smalltalk
 sudo: false
 
 smalltalk:
-  - Pharo-alpha
+  - Pharo64-7.0
+  - Pharo64-6.1
   - Pharo-6.1
-  - Pharo-6.0
   - Pharo-5.0
   - Pharo-4.0
   - Pharo-3.0
   - Squeak-trunk
   - Squeak-5.1
+  - GemStone-2.4.8
+  - GemStone-3.1.0.6
+  - GemStone-3.2.16
+  - GemStone-3.3.4
 matrix:
   allow_failures:
     - smalltalk: Pharo-alpha
+    - smalltalk: Pharo-3.0
+    - smalltalk: Pharo-4.0
     - smalltalk: Squeak-trunk
-    - smalltalk: Squeak-5.1
       os: linux
   
   include:
-    - smalltalk: Squeak-5.1
-      os: osx
-    - smalltalk: GemStone-2.4.8
-      cache:
-        directories:
-          - $SMALLTALK_CI_CACHE
-    - smalltalk: GemStone-3.1.0.6
-      cache:
-        directories:
-          - $SMALLTALK_CI_CACHE
-    - smalltalk: GemStone-3.2.16
-      cache:
-        directories:
-          - $SMALLTALK_CI_CACHE
-    - smalltalk: GemStone-3.3.4
-      cache:
-        directories:
-          - $SMALLTALK_CI_CACHE
+#    - smalltalk: Squeak-5.1
+#      os: osx
+    # - smalltalk: GemStone-2.4.8
+    #   cache:
+    #     directories:
+    #       - $SMALLTALK_CI_CACHE
+    # - smalltalk: GemStone-3.1.0.6
+    #   cache:
+    #     directories:
+    #       - $SMALLTALK_CI_CACHE
+    # - smalltalk: GemStone-3.2.16
+    #   cache:
+    #     directories:
+    #       - $SMALLTALK_CI_CACHE
+    # - smalltalk: GemStone-3.3.4
+    #   cache:
+    #     directories:
+    #       - $SMALLTALK_CI_CACHE
diff --git a/README.md b/README.md
index d2e72554..7b0b6cff 100644
--- a/README.md
+++ b/README.md
@@ -14,16 +14,21 @@ Grease does not try to solve all problems. We are not testing Sockets or HTTP cl
 
 Grease is widely adopted. Implementations exist already for all platforms that support Seaside 3.x. As well as Seaside, new versions of Magritte, Pier, and Monticello are already being implemented on top of Grease.
 
-## Travis builds
+## Platform compatibility and Travis builds
 
-The [Travis CI builds](https://travis-ci.org/SeasideSt/Grease) currently test Grease for the following platforms and versions:
+The latest Grease version is supported on the following platforms and versions, which are tested using [Travis CI builds](https://travis-ci.org/SeasideSt/Grease):
 
 | Squeak          | Pharo            | GemStone             |
 | --------------- | ---------------- | -------------------- |
-| Squeak 5.1      | Pharo 6.0        | GemStone 3.3.4       |
-|                 | Pharo 5.0        | GemStone 3.2.16      |
-|                 | Pharo 4.0        | GemStone 3.1.0.6     |
-|                 | Pharo 3.0        |                      |
+| Squeak 5.1      | Pharo 7.0        | GemStone 3.3.4       |
+|                 | Pharo 6.1        | GemStone 3.2.16      |
+|                 | Pharo 5.0        | GemStone 3.1.0.6     |
+|                 |                  | GemStone 2.4.8       |
+
+## Grease on older platforms:
+If you want to load Grease on older platform versions, these are the version numbers that correspond to the latest tested version of Grease on those platform versions:
+
+- Pharo 3.0 and 4.0: [Grease 1.3.4](https://github.com/SeasideSt/Grease/releases/tag/v1.3.4)
 
 ## Installation
 
diff --git a/repository/Grease-Pharo70-Core.package/TBehavior.extension/instance/fullName.st b/repository/Grease-Pharo70-Core.package/Behavior.extension/instance/fullName.st
similarity index 100%
rename from repository/Grease-Pharo70-Core.package/TBehavior.extension/instance/fullName.st
rename to repository/Grease-Pharo70-Core.package/Behavior.extension/instance/fullName.st
diff --git a/repository/Grease-Pharo70-Core.package/Behavior.extension/properties.json b/repository/Grease-Pharo70-Core.package/Behavior.extension/properties.json
new file mode 100644
index 00000000..c4116c4c
--- /dev/null
+++ b/repository/Grease-Pharo70-Core.package/Behavior.extension/properties.json
@@ -0,0 +1,3 @@
+{
+	"name" : "Behavior"
+}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/BlockClosure.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/BlockClosure.extension/methodProperties.json
deleted file mode 100644
index 32997637..00000000
--- a/repository/Grease-Pharo70-Core.package/BlockClosure.extension/methodProperties.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-	"instance" : {
-		"fixCallbackTemps" : "lr 4/8/2009 13:33",
-		"valueWithPossibleArguments:" : "lr 4/8/2009 13:36"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/ByteArray.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/ByteArray.extension/methodProperties.json
deleted file mode 100644
index 74afa640..00000000
--- a/repository/Grease-Pharo70-Core.package/ByteArray.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseString" : "jf 9/30/2009 01:10"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Character.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Character.extension/methodProperties.json
deleted file mode 100644
index 65a91aa5..00000000
--- a/repository/Grease-Pharo70-Core.package/Character.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseInteger" : "jf 9/30/2009 01:04"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Collection.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Collection.extension/methodProperties.json
deleted file mode 100644
index e1a71262..00000000
--- a/repository/Grease-Pharo70-Core.package/Collection.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"any" : "jf 2/6/2010 00:41"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Color.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Color.extension/methodProperties.json
deleted file mode 100644
index 76299b05..00000000
--- a/repository/Grease-Pharo70-Core.package/Color.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"asHTMLColor" : "JohanBrichau 5/25/2017 11:54"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Duration.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Duration.extension/methodProperties.json
deleted file mode 100644
index 90cd5df9..00000000
--- a/repository/Grease-Pharo70-Core.package/Duration.extension/methodProperties.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-	"instance" : {
-		"asMilliseconds" : "jf 2/5/2010 23:58",
-		"milliseconds" : "jf 2/6/2010 00:02"
-	},
-	"class" : {
-		"milliseconds:" : "jf 2/6/2010 00:12"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRDelegatingStream.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRDelegatingStream.extension/methodProperties.json
deleted file mode 100644
index 17581cee..00000000
--- a/repository/Grease-Pharo70-Core.package/GRDelegatingStream.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseNext:putAll:startingAt:" : "pmm 12/28/2010 22:13"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRDynamicVariable.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRDynamicVariable.class/methodProperties.json
deleted file mode 100644
index e69c682f..00000000
--- a/repository/Grease-Pharo70-Core.package/GRDynamicVariable.class/methodProperties.json
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-	"instance" : {
-		"default" : "JohanBrichau 7/23/2017 17:45"
-	},
-	"class" : {
-		"defaultValue" : "JohanBrichau 7/23/2017 17:45",
-		"use:during:" : "MaxLeske 5/16/2017 21:54"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPackage.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPackage.extension/methodProperties.json
deleted file mode 100644
index fb511c6f..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPackage.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : { },
-	"class" : {
-		"greasePharo60Core" : "JohanBrichau 5/25/2017 15:26"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoConverterCodecStream.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoConverterCodecStream.class/methodProperties.json
deleted file mode 100644
index 6455039d..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoConverterCodecStream.class/methodProperties.json
+++ /dev/null
@@ -1,13 +0,0 @@
-{
-	"instance" : {
-		"nextPut:" : "pmm 4/10/2010 13:30",
-		"greaseNext:putAll:startingAt:" : "pmm 12/28/2010 22:12",
-		"nextPutAll:" : "lr 2/7/2009 12:54",
-		"next" : "pmm 4/10/2010 13:32",
-		"next:" : "lr 2/7/2009 12:57",
-		"initializeOn:converter:" : "pmm 10/30/2010 18:58"
-	},
-	"class" : {
-		"on:converter:" : "pmm 10/30/2010 18:58"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/methodProperties.json
deleted file mode 100644
index 561fbf1e..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoGenericCodec.class/methodProperties.json
+++ /dev/null
@@ -1,16 +0,0 @@
-{
-	"instance" : {
-		"converter" : "lr 7/25/2011 19:51",
-		"decoderFor:" : "lr 2/7/2009 12:52",
-		"url" : "lr 2/7/2009 12:36",
-		"encoderFor:" : "jf 9/30/2009 00:46",
-		"initializeWithName:" : "pmm 8/16/2010 11:52",
-		"name" : "lr 2/7/2009 10:16"
-	},
-	"class" : {
-		"codecs" : "pmm 8/16/2010 00:19",
-		"supportsEncoding:" : "pmm 6/28/2009 16:43",
-		"basicForEncoding:" : "pmm 6/28/2009 15:43",
-		"supportedEncodingNames" : "lr 7/25/2011 19:46"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoLatin1Codec.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoLatin1Codec.class/methodProperties.json
deleted file mode 100644
index 1bd8105c..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoLatin1Codec.class/methodProperties.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-	"instance" : {
-		"decoderFor:" : "pmm 8/16/2010 00:32",
-		"decode:" : "pmm 8/16/2010 09:20",
-		"initializeWithName:" : "pmm 8/25/2016 11:00",
-		"encoderFor:" : "pmm 8/16/2010 00:32",
-		"name" : "pmm 8/16/2010 00:32"
-	},
-	"class" : {
-		"codecs" : "lr 7/25/2011 19:46",
-		"supportsEncoding:" : "pmm 8/16/2010 00:36",
-		"basicForEncoding:" : "pmm 8/16/2010 00:36",
-		"supportedEncodingNames" : "lr 7/25/2011 19:46"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoLatin1CodecStream.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoLatin1CodecStream.class/methodProperties.json
deleted file mode 100644
index eaf30bc6..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoLatin1CodecStream.class/methodProperties.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-	"instance" : {
-		"next:" : "lr 7/25/2011 19:50",
-		"next" : "pmm 8/16/2010 09:16"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/base64Decode..st b/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/base64Decode..st
index 382a7f83..3fb71b1a 100644
--- a/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/base64Decode..st
+++ b/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/base64Decode..st
@@ -1,3 +1,3 @@
 encoding
 base64Decode: aString
-	^ (Base64MimeConverter mimeDecodeToChars: aString readStream) contents
\ No newline at end of file
+	^ aString base64Decoded asString
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/readWriteByteStream.st b/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/readWriteByteStream.st
index 35251d7b..db9518ee 100644
--- a/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/readWriteByteStream.st
+++ b/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/instance/readWriteByteStream.st
@@ -2,4 +2,4 @@ factory
 readWriteByteStream
 	"ByteArray based read write stream"
 	
-	^ RWBinaryOrTextStream on: (ByteArray new: 4096)
\ No newline at end of file
+	^ ReadWriteStream on: (ByteArray new: 4096)
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/methodProperties.json
deleted file mode 100644
index 4e14201e..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoPlatform.class/methodProperties.json
+++ /dev/null
@@ -1,45 +0,0 @@
-{
-	"instance" : {
-		"pathSeparator" : "pmm 8/4/2012 12:38",
-		"readWriteCharacterStream" : "dkh 9/4/2009 09:14",
-		"fileStreamOn:do:binary:" : "JohanBrichau 10/3/2014 19:59",
-		"addToShutDownList:" : "jf 1/21/2009 17:31",
-		"removeFromShutDownList:" : "JohanBrichau 5/25/2017 11:46",
-		"removeSelector:from:" : "JohanBrichau 4/19/2014 13:44",
-		"semaphoreClass" : "lr 7/25/2011 19:51",
-		"useByteArrayLiterals" : "pmm 8/4/2012 12:39",
-		"bindingOf:" : "JohanBrichau 7/12/2015 14:45",
-		"write:toFile:inFolder:" : "pmm 8/4/2012 13:02",
-		"newRandom" : "pmm 10/7/2010 13:10",
-		"asMethodReturningByteArray:named:" : "lr 7/25/2011 19:51",
-		"filesIn:" : "pmm 8/19/2012 10:18",
-		"newline" : "lr 4/15/2010 19:14",
-		"terminateProcess:" : "jf 2/6/2009 15:59",
-		"writeCharacterStreamOn:" : "pmm 8/26/2011 09:45",
-		"contentsOfFile:binary:" : "JohanBrichau 10/3/2014 19:59",
-		"doSilently:" : "pmm 9/12/2013 17:55",
-		"fileExists:" : "JohanBrichau 10/3/2014 20:02",
-		"isProcessTerminated:" : "jf 2/6/2009 15:58",
-		"removeFromStartUpList:" : "JohanBrichau 5/25/2017 11:46",
-		"stackDepth" : "jf 1/21/2009 17:31",
-		"secureHashFor:" : "DamienCassou 8/27/2013 18:30",
-		"base64Decode:" : "jf 1/21/2009 17:31",
-		"compile:into:classified:" : "pmm 9/12/2013 11:24",
-		"asMethodReturningByteArrayWithCache:named:" : "pmm 2/20/2009 17:44",
-		"label" : "jf 2/9/2010 00:56",
-		"weakDictionaryOfSize:" : "lr 7/25/2011 19:51",
-		"localNameOf:" : "pmm 8/19/2012 10:19",
-		"openDebuggerOn:" : "pmm 1/22/2012 16:31",
-		"ensureExistenceOfFolder:" : "pmm 9/12/2013 12:05",
-		"asMethodReturningByteArrayLiteral:named:" : "lr 7/25/2011 19:51",
-		"addToStartUpList:" : "JohanBrichau 5/25/2017 11:44",
-		"directoriesIn:" : "pmm 8/19/2012 10:19",
-		"readWriteByteStream" : "JohanBrichau 1/18/2014 07:05"
-	},
-	"class" : {
-		"initialize" : "pmm 5/20/2010 11:49",
-		"initializeXmlTable" : "pmm 5/20/2010 20:56",
-		"unload" : "jf 1/22/2009 02:45",
-		"initializeUrlTable" : "pmm 5/20/2010 20:56"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoRandomProvider.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoRandomProvider.class/methodProperties.json
deleted file mode 100644
index e9905923..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoRandomProvider.class/methodProperties.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-	"instance" : { },
-	"class" : {
-		"initialize" : "jgf 1/25/2009 12:05",
-		"randomFrom:" : "lr 7/25/2011 18:28",
-		"randomClass" : "lr 7/25/2011 19:46",
-		"nextInt:" : "lr 7/25/2011 19:46",
-		"startUp" : "pmm 1/10/2009 16:01",
-		"unload" : "jf 9/30/2009 00:19"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoUtf8Codec.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoUtf8Codec.class/methodProperties.json
deleted file mode 100644
index ab426978..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoUtf8Codec.class/methodProperties.json
+++ /dev/null
@@ -1,15 +0,0 @@
-{
-	"instance" : {
-		"decoderFor:" : "jf 9/30/2009 00:46",
-		"url" : "pmm 2/20/2009 12:50",
-		"decode:" : "pmm 2/17/2012 19:45",
-		"invalidUtf8" : "JohanBrichau 1/18/2016 08:13",
-		"encoderFor:" : "jf 9/30/2009 00:46",
-		"name" : "pmm 2/20/2009 13:25"
-	},
-	"class" : {
-		"codecs" : "lr 7/25/2011 19:46",
-		"supportsEncoding:" : "lr 7/25/2011 19:46",
-		"basicForEncoding:" : "lr 7/25/2011 19:46"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRPharoUtf8CodecStream.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRPharoUtf8CodecStream.class/methodProperties.json
deleted file mode 100644
index f7520d19..00000000
--- a/repository/Grease-Pharo70-Core.package/GRPharoUtf8CodecStream.class/methodProperties.json
+++ /dev/null
@@ -1,17 +0,0 @@
-{
-	"instance" : {
-		"crlf" : "pmm 4/10/2010 13:28",
-		"next" : "pmm 2/17/2010 20:09",
-		"invalidUtf8" : "jf 9/30/2009 00:39",
-		"greaseNext:putAllFast:startingAt:" : "pmm 5/21/2014 21:28",
-		"greaseNext:putAll:startingAt:" : "pmm 8/15/2011 21:32",
-		"encodeDefault:" : "lr 7/25/2011 18:36",
-		"nextPut:" : "lr 7/25/2011 19:51",
-		"nextPutAll:" : "pmm 4/10/2010 13:28",
-		"next:" : "pmm 8/25/2016 11:00",
-		"encodeFast:" : "pmm 8/25/2016 11:00"
-	},
-	"class" : {
-		"initialize" : "lr 7/25/2011 19:46"
-	}
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRSmallDictionary.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRSmallDictionary.extension/methodProperties.json
deleted file mode 100644
index 780f7a2a..00000000
--- a/repository/Grease-Pharo70-Core.package/GRSmallDictionary.extension/methodProperties.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-	"instance" : {
-		"explorerContents" : "lr 7/25/2011 19:51",
-		"customizeExplorerContents" : "lr 7/25/2011 19:51",
-		"hasContentsInExplorer" : "lr 7/25/2011 19:51"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/GRWorkingWriteStream.class/methodProperties.json b/repository/Grease-Pharo70-Core.package/GRWorkingWriteStream.class/methodProperties.json
deleted file mode 100644
index ef5029dc..00000000
--- a/repository/Grease-Pharo70-Core.package/GRWorkingWriteStream.class/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"reset" : "pmm 8/26/2011 09:39"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Interval.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Interval.extension/methodProperties.json
deleted file mode 100644
index 15fc20f1..00000000
--- a/repository/Grease-Pharo70-Core.package/Interval.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"any" : "jf 2/6/2010 03:25"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/MessageSend.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/MessageSend.extension/methodProperties.json
deleted file mode 100644
index e8c80c34..00000000
--- a/repository/Grease-Pharo70-Core.package/MessageSend.extension/methodProperties.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-	"instance" : {
-		"fixCallbackTemps" : "pmm 4/23/2007 20:02",
-		"valueWithPossibleArguments:" : "lr 7/25/2011 19:52",
-		"argumentCount" : "pmm 1/10/2009 19:22"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Number.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Number.extension/methodProperties.json
deleted file mode 100644
index 4fa9352e..00000000
--- a/repository/Grease-Pharo70-Core.package/Number.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"milliseconds" : "jf 2/6/2010 00:12"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Object.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Object.extension/methodProperties.json
deleted file mode 100644
index 74afa640..00000000
--- a/repository/Grease-Pharo70-Core.package/Object.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseString" : "jf 9/30/2009 01:10"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/Point.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/Point.extension/methodProperties.json
deleted file mode 100644
index 0404714c..00000000
--- a/repository/Grease-Pharo70-Core.package/Point.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseString" : "pmm 8/25/2016 10:59"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/PositionableStream.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/PositionableStream.extension/methodProperties.json
deleted file mode 100644
index c3b569c5..00000000
--- a/repository/Grease-Pharo70-Core.package/PositionableStream.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseUpToAll:" : "jf 9/30/2009 01:06"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/ScaledDecimal.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/ScaledDecimal.extension/methodProperties.json
deleted file mode 100644
index 49427152..00000000
--- a/repository/Grease-Pharo70-Core.package/ScaledDecimal.extension/methodProperties.json
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-	"instance" : {
-		"encodeOn:" : "pmm 8/25/2016 18:52",
-		"greaseString" : "JohanBrichau 5/25/2015 08:55"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/SequenceableCollection.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/SequenceableCollection.extension/methodProperties.json
deleted file mode 100644
index 6601bb05..00000000
--- a/repository/Grease-Pharo70-Core.package/SequenceableCollection.extension/methodProperties.json
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-	"instance" : {
-		"endsWithSubCollection:" : "jok 3/22/2010 11:47",
-		"sorted" : "jf 2/6/2010 02:01",
-		"beginsWithSubCollection:" : "jok 3/22/2010 11:48"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/SocketStream.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/SocketStream.extension/methodProperties.json
deleted file mode 100644
index 4ae249e5..00000000
--- a/repository/Grease-Pharo70-Core.package/SocketStream.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseNext:putAll:startingAt:" : "pmm 5/23/2010 08:17"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/TBehavior.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/TBehavior.extension/methodProperties.json
deleted file mode 100644
index 683abe21..00000000
--- a/repository/Grease-Pharo70-Core.package/TBehavior.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"fullName" : "PavelKrivanek 4/21/2017 11:40"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/TBehavior.extension/properties.json b/repository/Grease-Pharo70-Core.package/TBehavior.extension/properties.json
deleted file mode 100644
index f94cdffb..00000000
--- a/repository/Grease-Pharo70-Core.package/TBehavior.extension/properties.json
+++ /dev/null
@@ -1,3 +0,0 @@
-{
-	"name" : "TBehavior"
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/WriteStream.extension/methodProperties.json b/repository/Grease-Pharo70-Core.package/WriteStream.extension/methodProperties.json
deleted file mode 100644
index 8ae2fa45..00000000
--- a/repository/Grease-Pharo70-Core.package/WriteStream.extension/methodProperties.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-	"instance" : {
-		"greaseNext:putAll:startingAt:" : "jf 5/22/2010 20:26"
-	},
-	"class" : { }
-}
\ No newline at end of file
diff --git a/repository/Grease-Pharo70-Core.package/monticello.meta/version b/repository/Grease-Pharo70-Core.package/monticello.meta/version
deleted file mode 100644
index 8864bb06..00000000
--- a/repository/Grease-Pharo70-Core.package/monticello.meta/version
+++ /dev/null
@@ -1 +0,0 @@
-(name 'Grease-Pharo70-Core-JohanBrichau.1' message 'branch from Grease-Pharo60-Core-JohanBrichau.4 to start supporting Pharo7 specifics' id '6aaa3511-a51a-0d00-a9b8-5e8804322501' date '18 November 2017' time '4:15:57.894626 pm' author 'JohanBrichau' ancestors () stepChildren ())
\ No newline at end of file