Enhancements

Added catches to the remaining wait functions.
Added options field to the Select model. This field functions like an Array model for the option elements.
Most actionable operations (Eg: hover, click, collect, setValue, etc...) will now retry their attempt a couple of times should the attempt fail for some reason.
Moved the variables for WAIT_TIMEOUT and NUM_RETRIES to the nemo.page object to allow users to change these variables should they wish to.
Added a Radio model for interacting with radio input fields.
Bug Fixes

withClass on Element models now functions properly.

Other
Updated documentation.