Multiple typos fixed
Replacement wrapper for form_driver_w() moved to Ncurses::prepare_form_driver and called after initscr
Cleanups
Removed previous wrapper for form_driver_w()
Improved Ncurses::CharCode#replace method (detects if input is a charcode or a character)
Added Form::DriverHelpers module with methods that ease usage of form_driver
TextField now uses form_driver helpers from Ncurses::Form::DriverHelpers