Urgent Fix: kwargs

[BalzaniEdoardo]

There are some methods like IntervalSet.__init__ that has unused **kwargs. This can result in an unwanted behavior if one, for example, misspell a keyword argument it won't be set and no error will be raised.

We should go through all the defs that includes **kwargs and think if we can remove any and fix the logic.

[gviejo]

• convolve strip the column names

[gviejo]

TsGroup test for time_support if not None

[gviejo]

check kwargs list for count