Better error message for reset and threshold when specifying a single value instead of a string (Brian1 syntax)
Automatically convert e.g. lists to Quantity objects (if possible) in the check_units decorator and give more useful error messages in case conversion fails
Give the user a better idea which code is triggering an exception when calling `run`
Raise an error when trying to set a state variable with an incorrect size
Make `from brian2.units import *` also import the standard units
Merge pull request #287 from brian-team/better_error_messages

Better error messages