Added  tips to the Additional Configuration section in README
add option to open file explorer window from the commandline, bump to 21.4.0
update docs about jo(), jc(), jco()
remove _j() as it was never used to begin with.
update docs
minor code cleanup
use zsh change directory hook rather than pre-command hook
handle white space properly when opening with file manager
Update docs on ZSH tab completion.

Closes #178.
version bump
Fixed issue: Command "jc" doesn't jump correctly if sibling directories have same prefix
Merge pull request #180 from jsliang/master

Fix issue #179
Revert "remove _j() as it was never used to begin with."

This reverts commit 49a0d702ba52640c11f7b54aea291a65b71beff7.

Conflicts:
	bin/autojump

Closes #178, #181.
Merge branch 'master' of github.com:joelthelion/autojump
minor version bump
Trying to fix Issue #177
Merge pull request #183 from jsliang/master

Handle autojump errors when opening file manager.

Closes #177.
Fix Issue #182
Merge pull request #184 from jsliang/master

Do not exit with error if current directory is the only match.

Closes #182.
version bump to 21.4.6