Add blacklisting to not add certain commands to the history

[AlexanderThaller]

Some stuff shoudnt be added to the history every. Add a blacklist functionality to blacklist commands with a regex.

[tmpm697]

so now we have two options: commands begin with space and a fixed list of commands to avoid in history?

[AlexanderThaller]

@tmpm697

so now we have two options: commands begin with space and a fixed list of commands to avoid in history?

Yeah that would be the idea

[tmpm697]

I like the idea, list of blacklist commands to exclude in history and #37 would be enough to control the exclusive patterns I hope, let's see.