a5ob7r

Thank you for this interesting project! This patch fixes the problem that the `-b` option has no effect at runtime even it has already been implemented. https://user-images.githubusercontent.com/12132068/149713816-b2493e3c-5d9e-4887-986d-c5cade34a333.mp4

The previous regex to detect Kindle Fire devices is incomplete, so it can only detect Kindle Fire (1st Gen) and Kindle Fire HD 7 (2nd Gen). The reason why is...

This is for a little bit startup time improvement by autoloading. No always need to define the function at the time of startup because maybe the function isn't called at...

Remove extra dependencies(cat, env, which), but maybe these are installed in almost all environments... This makes a little bit fast this command invocation because no external command loads.