* lib/directories (cd): Adjust style of `cd` function
* lib/directories (cd): Use regex to match integers
* lib/directories (cd): Use _omb_util_alias to replace cd
* lib/directories (cd): Update the function description
* OMB - Major Refactor
- Aliases and completions now works like plugins (need to enabled in .bashrc)
- Removed the compatible check in spectrum.sh, OMB now works with Bash v3.x like the old days.
- Removed core plugin, added those bash functions into base.sh and load during startup.
- Updated OSH template for new installations
- Added history config and few other stuff from #17
@TODO: Added a shell script to update old version of .bashrc to new one.
* Fixed ShellCheck issues
* Fixed ShellCheck issues