Updated version for next release.
Minor changes: catch all exceptions inside IoUtils.close() method.
Added util class ObjAsRunnableCallback.
Merge branch 'master' into release

Conflicts:
	gradle.properties
Merge branch 'release' into demo

Conflicts:
	lib-core/src/main/java/xdroid/core/IoUtils.java
	lib-core/src/main/java/xdroid/core/ThreadUtils.java