[maven-release-plugin] prepare release 0.9.19
[maven-release-plugin]  copy for tag 0.9.19
[maven-release-plugin] prepare for next development iteration
Also accept "meta" as an abbreviation for the "metadata" sub-command.
Be less strict in determining when to unset in prefix/suffix aliases.
Add prototype bPerms-to-zPerms script. Still not multi-world-aware.
rank-admin-broadcast defaults to false now.
UI change: All references to "priority" are now "weight."
Add FAQ.
opaque-inheritance defaults to false now.