pyndl 0.3.0

• gzipped event files (solves #68)
• harmonize dict_ndl and ndl (solves #75)
• replace docopt with dependecy (solves #71)
• improve readme (solves #80)
• improve alpha attribute in dict_ndl (solves #73)

If you want to reuse old event files please gzip them in order to use them with the new code.

The following list contains the API changes in the format old function call above and new function call below:

   activation.activation(event_list, ...)
=> activation.activatoin(events, ...)

   ndl.events(...)
=> ndl.events_from_file(...)

   ndl.ndl(event_path, ...)
=> ndl.ndl(events, ..., verbose=False)

   ndl.dict_ndl(event_list, ...)
=> ndl.dict_ndl(events, ..., verbose=False)

   ndl.slice_list(..., sequence)
=> ndl.slice_list(..., len_sublists)