Use $(somecommand) rather than `somecommand`
Style & functionality changes

* Use lowercase variables
* Print usage if --help is given anywhere on the command line
* Use ${0##*/} instead of $(basename $0)
* Use quotes when needed
* Don't put `then` or `do` on their own line
* Use tab to indent the bodies of case statements
* Escape quotes the proper number of times in sshdiff
* Remove useless function in wscrot
Add `gob`

This is an implementation of Gob's Program in bash.
Expand `hrsleft --help` output
Add some git-related tools
Restructure afraiddns