docs: add examples for input charlimit option

feat: support over 64 multichoose items

feat: multichoose support setting default value

fix: default value don't work when used with validateFunc (#20)

close #20

test: remove tester package

feat: the ✔ is not displayed when the validation is successful

fix(#8): error is not returned if validation fails

feat: add a theme that clears the screen when exiting

docs: add example for passing tea.ProgramOption

feat: write add width and lineNumbers options