Add history operations

[sam80180]

Show history commands and execute history command using bash-style history command number (e.g. !99)

[Verseth]

Unfortunately no one has been maintaining it for the last 4 years.

I've created a fork and merged lots of PRs from this repo.
There's lots of new functionalities like customisable syntax highlighting, multiline editing, customisable automatic indentation.

I use it to build a REPL for my programming language, but I want to maintain it as an independent library.

https://github.com/elk-language/go-prompt

I'd gladly look over your PR in my fork if you're interested.
A lot of changes have been done and the rendering system has been mostly rewritten.