Use the builtin $signals array
[Fix #399] Only enable the main syntax highlighter
[Upg] Upgrade submodules too
Update external completions
Update external syntax-highlighting
Update external history-substring-search
Remove no longer necessary key bindings
Fix misspellings of the word bellow in READMEs
Wrap errant long line in git module README
Correct typos in git module README
[Fix #403] Display accented characters properly
Merge branch 'master' of git://github.com/sorin-ionescu/prezto