Handle iOS audio interruption
GetAlbumArt returns roughly the same size as XNA
GetAlbumArt with optional width and height parameters for iOS and Android
GetThumbnail simplified
Merge pull request #3299 from SongArc/feature/albumart_resolution

Album art resolution improvements
Merge pull request #3297 from SongArc/feature/ios_audio_interruption

Handle iOS audio interruption
VertexBuffer Tests

Tests for  VertexBuffer.GetData()
Merge pull request #3301 from nkast/vertexBufferTest

VertexBuffer Tests
Merge pull request #3298 from cra0zy/develop

Linux MGCB fixes