add manufacturerData support for advertiseBuider

增加释放方法

remove useless file

Add disposed checker to ble device

Change version to 0.9.6 in README.md

Change version to 0.9.5 in README.md

Change version to 0.9.4 in README.md

Add bluetooth state changed listener.

Fix startService error after stop.

Update version to 0.9.2

When 'doFilterDevice' returns false, directly disconnect the central …

…device.