make JBrowse/Util/GFF3 for low-level GFF3 routines
WIP on new gff3 parser
gff3 parser working fairly well
Modified drag-and-drop behavior of simple tracklist to allow selection of multiple items with ctrl- and shift-click

Conflicts:

	src/JBrowse/View/TrackList/Simple.js
Modified Simple.js to use dojo/on and removed redundant helper functions

Conflicts:

	src/JBrowse/View/TrackList/Simple.js
tweak simple tracklist styling, remove a little dead code
fixed bug with faceted track selector and replaceTracks
turn gff3 parser into a push parser instead of a pull parser
wip on new gff3 store
bugfixes to GFF3 parsing
new GFF3 store implementation working
gff3 store getting closer to correct
gff3 store getting closer
add failing test for unicode chars in gff3
make FileBlob line-getting properly decode UTF-8
add gff3 rewrite to release notes
Merge branch 'gff3' into maint/1.9.x

Conflicts:
	release-notes.txt
release 1.9.5
fix GFF3 embedded-FASTA handling, sigh
fix BAM error callback