add tests for key bindings
#182 - merge in VintageousEx

--HG--
rename : LICENSE.txt => licenses/Vintage LICENSE.txt
#182 - make ':' command optional (enabled by default)
#182 - esc exits command line
#182 - edit readme to include settings documentation
fix :substitute ex command
edit changelog
Added tag 0.9.6 for changeset 636bb2b77220