- Framework API change: introduce class PositionToBasesMap<T> to use as type for positionToBases. The class provides methods to get the range of positions described in the map. This unfortunately requires changes to all clients/implementations of IterateSortedAlignments<T>.
 - Mode discover-sequence-variants: Fix various problems that prevented reporting genotypes for deletions (i.e., C/-).
Add test for insertions, deletion and mutation.
update release number