Various Feature Ideas

Hi, I was thinking a bit today about some features that could prove useful to users. I'd be happy to lend a hand in thinking through and building out some of them, if you're interested.

1. The ability to load various commands into "slots" or something similar, i.e. if someone finds themself repeating the same commands over and over, they can instead load them into a slot and then recall it like bh 3 to recall the command in slot 3

2. A listing of my most commonly-entered commands ordered by frequency.

3. A community-driven repo of helpful commands and scripts that users can search through to find help, ideas, etc for their own scripting needs (think like a "marketplace" for lack of a better term, but for shell scripts). This would obviously be the most work, but I think it could be enormously helpful for people. This could also potentially be integrated within #1 (closed), where you could select one of these commands and load it into whichever slot you choose.

Let me know what you think!