added .gitignore.
added is_available_provider() method.
added new type 'alpha' to rndpassword.
tweaked rndpassword.
switched to Minilla.
updated heavy tests to use devurandom preferably.
moved rndpassword to script/.
added zsh completion sample file.
tweaked rndpassword for shebang line.
released 0.08.
Merge branch 'release-0.08'