Prepare for 2025.6 release

fixes an issue where after tab completing a command's options, custom…

… types would fail to convert input parameters correctly

Bump library version number

fix minimum Python version listed in README

updated dev dependencies and made fixes for running on macOS

Bump library version to 2024.6

Update lock file to address the requests library CVE-2023-32681

bump version number for release

allow commands tagged with atstart to be async and run in the backgro…

…und (perhaps some long running process while the rest of the shell executes)

add pudb back to dependency list