Pre-Release

Interfaces

Support domain setting for LineTrack and AreaTrack

Alternative constructors to create GeneTrack and TxTrack from EnsDb

Alternative constructors for LineTrack and AreaTrack showing coverage of GRanges

Additional argument specifying columns of tooltip in *TrackFromTxDb

Internal

Use GRanges instead of the *TrackData virtual classes for TrackData

Long-term

Implement interfaces to TnT tree