srange() type fix
- strange now checks if a value can be equivalently expressed as an int instead of just a float. this should make plots look neater.
set_xticks() changes
- added the ability to make custom labels using 'mylist' and 'mylabels' as key word args
set_yticks() changes
- added the ability to make custom labels using 'mylist' and 'mylabels' as key word args