v1.3.0

In this release:
-Overall refactor
-Using only https server
-Using datmusic as backend instead of VK API directly
-Changed network library to retrofit2 with OkHttp 3.4.1
-Audio ListView to RecyclerView
-MainActivity Refactor
-Pagination with load on scroll to bottom
-Bitrates. Downloading with custom bitrates & precise bitrate
-M permissions
-Published to PlayStore as paid app
-Package name changed