fix: smkx keypad-transmit mode (AlecAivazis#367)

* fix: smkx keypad-transmit mode.

* chore: remove unreachable code.

* review: split application and normal mode and add links to doc.

* review

* review: full rewrite

* feat: use KeyEscape constant

* doc: add method godoc

small fix for windows rendering (AlecAivazis#370)

Create README.md

Add WriteAnswer support for promoted fields (AlecAivazis#366)

Validators for the number of responses in multiselect (AlecAivazis#362)

* ✨ validators for the number of responses in multiselect

* documentation for MaxItems and MinItems validators

(fix): arrow key behavior on input prompt (AlecAivazis#361)

* first pass at input using RuneReader.ReadLine with suggestions

* fix newline from readline

* better callback name

* (fix): skip tests with editor

* (feat): allow prompt callback on rune input and initial input

* (fix): fallback to ReadLine when not using "auto complete"

* (feat): tests input navagation

* (fix): suggestions can be dismissed

* (fix): editor blocking testing

Co-authored-by: Alec Aivazis <[email protected]>

correct cursor location when terminal wraps lines (AlecAivazis#360)

Co-authored-by: Evan <[email protected]>

Add option to show/hide cursor when prompting user (AlecAivazis#345) (A…

…lecAivazis#348)

update vendor

upgrade golang.org/x/text to fix vulnerability - closes AlecAivazis#344