* flake8 fixes -- tests only
* fix ci failure
* integrate fix from is_3551 so tests will pass.
* Update tests/test_builtins.py
Co-authored-by: Gil Forsyth <gforsyth@users.noreply.github.com>
* delete package ptk; rename ptk2 to ptk_shell.; leave ptk2 as alias for ptk_shell.
* SHELL_TYPE "prompt_toolkit" only; remove ptk1 specific behavior.
* Doc updates: eliminate reference to prompt-toolkit < 2.0
* update requirements files ptk>=2; test shell_style="none"
* fix ptk2 stub per code review
* Add ptk2 to list of packages to install.