fix Wiggle track mouseleave events
make impliedUTRs able to create just one missing UTR
release 1.10.6
prefer "seq_id" over "name" when assembling reference sequence from fragments
make reference-sequence assembly not require `name` or `seq_id` attributes
fixed 121 compat selenium test
fix seldom (never?) hit vcf track bug
fix display of sequence_blur in zoomed-out seq track

Conflicts:

	src/JBrowse/View/Track/Sequence.js
Update release notes
Fix mistake merging "Zoom in to see sequence" fix
remove unused sequence-reegion parsing in prepare-refseqs.pl --gff handling
Passes yeast_biodb_test.py  Still has perl errors, but those originate from bioperl
make "length ascending" a synonym for "length" when processing the `refSeqOrder` config variable
tweak release notes wording
make prepare-refseq.pl response --noseq when using --fasta
release notes typo
fix prepare-refseqs.pl bug formatting fasta files with line lengths longer than the chunk size.  fixes #363.
add shoutout to @jriethoven and issue number to release notes
add test for REST feature store region stats call
add getRegionFeatureDensities method to REST feature store, closes #365