remove 'all' commands about robot-player HOT 2 OPEN

Do you want me to go through with this one?

Here's how I would try to handle it:

1. Find and replace every call to an 'all' function with a call to the regular function
2. Make ids into an optional argument. Default value is None, and triggers an assert that length of commands equals length of motor ids.
3. Write a regular expression to fix driver code (e.g. replace "set_command_position([1,2,3,4], [pi,pi,pi,pi])" with "set_command_position(angles=[pi,pi,pi,pi], ids=[1,2,3,4])").
4. Test, delete 'all' functions, test some more.

from robot-player.

let's hold off on this one for now. I want to make sure that we successfully finish some of the other pull requests first.

from robot-player.