First S&G release

NDK updated to r16b (bitrise-io#99)

CHANGELOG for v2017_11_15_1

NDK updated to r15c (bitrise-io#75)

NDK updated to r15b (bitrise-io#67)

NDK updated to r15 (bitrise-io#64)

added separator newline

Feature/sys report update (bitrise-io#21)

* cmake version

* changelog and version for `v2016_10_27_1`

v2016_06_18_1

* `android-ndk-r12-linux-x86_64` - thanks to [@ThorstenBux](bitrise-io#2)
* better `system_report`

v2016_05_26_1

"Checkpoint", before migration to `ubuntu:16.04` (based on `bitriseio/docker-bitrise-base:2016_05_14_1`)