refactor the librrary to kotlin

1.5.3

Merge remote-tracking branch 'origin/master'

some improvements

Merge pull request #12 from AhmedDroid/master

Code Structure Cleanup

hot fix

1.5.1

Merge remote-tracking branch 'origin/master'

Updating the library

Updating the library and code cleanup

java 8 support

java 8 support
some bug fixs

stable version

fix some bugs
add custom crash Listener