More flexibility in string handling

[Fell]

I tried this bot with my group and we immediately ran into some small problems that can be easily fixed:

Don't be case sensitive
User names are currently handled case-sensitive, which leads to users having multiple different scores.

Allow spaces
A lot of Telegram clients are adding a space after auto-completing a user name which results in messages like /karma @User ++ which then aren't handled because of the space between the username and the ++

Fix double minus
Also, some clients are auto-completing a double minus -- to a long dash –. Users are wondering why is doesn't work because they don't see the difference which is litterally one pixel. So I think a long dash should just work as well.

Allow user names without @
One of our members doesn't have a telegram.me username, so he just gets auto-completed to his first name. I think names without @ should work as well, since they aren't being checked anyway.

That's just my opinion. Let me know if you are going to implement some of it ;) # @

[franexposito]

Hi @Fell, thanks for the ideas. I am working on your recommendations and soon you will see the improvements

[alexglue]

so how it's going?