Help and usage messages Specify that the help option causes the program to exit immediately. Standardize order of options then positional arguments.
Helptext updates The more honest description of these programs is [OPTIONS] before PROGRAM. Options like quiet and verbose do behave differently if they follow.
whichhead fix The helptext incorrectly claimed that --number=N was supported.
Formatting fixes; Help message fixes
Refactored code into multiple 'packages'. One day these may be independently installable. For now it's just an organization method. Rewrote main README and added per-package READMEs. Also: bug fix on whiched and whichvi. They formerly propogated an error if $EDITOR or $VISUAL were set to a non-existant executable. Also improved the inline documentation.
Initial commit of cleaned-up dev branch