Multiple aliases for commands

[l3nz]

We could have multiple aliased for each subcommand, like e.g.

COMMANDS:
 add, a     adds 
 sub, s     subtracts

So writing

mycmd add --a 1 --b 2

and

mycmd a --a 1 --b 2

are the very same thing.

[l3nz]

Closed.