Remove unused code and comments
Remove run-current-file-as-python

This should done be in a shell buffer or with ez-shell.
Cleanup whitespace

Replace tabs with 4 spaces and delete trailing spaces.
Tidy up introductory file headers
Remove ctags customizations

They were never actually tested, and YAGNI at the moment.
Move stray programming customizations out of init.el
Merge branch 'cleanup'