Added test file for SAM color tag
Preliminary work on EQTL support (codec, feature, and preprocessor)
Use buffered stream for alignment queries
Add support for 0x800 ("supplementary") alignment flag.  Display "supplementary" alignments with dark grey color.    Minor menu cleanup.
Use buffered stream for BAM files
IGV-2034  Track filter pane scrollbars do not appear
IGV-2034  Track filter pane scrollbars do not appear
Merge remote-tracking branch: upstream/master