Update README.md
add variable interpolation to config system
fix jdataview loading errors in js unit tests
rewrite config loading
re-enable usage reporting disabled in 88b8172747939bfc101077cba5c9062020bcf92c
re-enable usage reporting disabled in 88b8172747939bfc101077cba5c9062020bcf92c
update release notes
add --metadata arg to bam-to-json.pl

Conflicts:

	release-notes.txt
add `--metadata` arg to `flatfile-to-json.pl`
render multi-valued attributes as a string of boxes
release 1.10.12
Merge branch 'maint/1.10.x'

Conflicts:
	release-notes.txt
fix fatalerrors on browser milestone deferreds
fix compat_121.html for new config tweaks
bugfix to config merging
Merge remote-tracking branch: upstream/master