Add option to show only mismatches.
Show dots instead of matches.
Distinguish between feature orientation.
WIP tier-group prototype.
WIP.
Working prototype of tier-groups.
color strands, change del to # char
changed drawing for svg export
change color scheme, show quality for non-ref bases
changed strand colors to match igv
Merge pull request #1 from dev/color_strands_differently

Color strands differently for call review, show quality of nonref bases based on opacity.
Propogate overlay canvas.
Allow explicit functions to be specified as merge plugins.
Fix some script tags.
Bug fix for uncollapsing super groups
Handler numbers.
Smart cursor.
Fix label rendering in image export.
Fix capabilities bug in overlay code.
Merge pull request #2 from dev/fix_uncollapsing_supergroup

Bug fix for uncollapsing super groups