line wrapping, updated PHP and zsh, added Python in .sublime-settings file

I rewrapped all the comments in the .sublime-settings file to ~80 chars/line so it can more easily be read in narrower windows (some of the settings lines are still longer, though). For consistency's sake, I also changes all whitespace to spaces. Next, I added a little bit more `zsh` support (added `zsh` as a `"binary"` and in the `"file_name"` regex with `.bash` and `.sh`) and added a small Python section - filenames `.py|pyw|py3`, and binary `python`. Finally, I remember when I was learning PHP 15 or 20 years back that some file names had the version number appended, so I changed the `"file_name"` rule to not only match `.php`, but also `.php(3|4|5)`. That may not be common anymore, but legacy stuff hangs around forever!

I did exactly the same things on the master branch, I'll be sending a pull request for that momentarily... it's #50