anchor_algorithm called source and shadow as parameter or as 
self._source/shadow interchangably. This is now unified as self._source 
and self._shadow everywhere.

Fixed .csv writing, should now work. Rummaged in view to make both writers selectable, but decided to keep it for next sprint maybe.

Data update

Continued last night's update. Sentence now extends list so that it can be used in the same way as the list of Words that was previously used. Emma's strategy has been adapted to work with the new structure. That just leaves Thijs's strategy.

See merge request !40

Debugged I/O class. It works in the sense that it performs CSVreading and txtwritingdecently. Next up: finding format that I can write to NICE .txts and to .csvs

Added .csv as explicit default file type for file selection, some syntactic and spelling improvements.

Introduced additional elegant type checks (source/shadow) and fixed an error introduced through previous commit

'Uncluttered' action-value pair splitting in actionlistener and adapted filereader call according to expected new structure.

Updated the bookkeeping of which words are shadowed to account for gaps, otherwise errors would occur

Removed the functions to calculate the latencies and mistakes as they relied on the old frame which is deprecated.

The way it is currently fed to extract_data and df_to_words will not work, this needs to be looked at.

Refactored all namings such that the functions using the functions in Word which were named differently after the update work again.

Refactored the naming of the function and added the get_difference function again as it was necessary for data_comparer

Merge branch 'refactoring/master' of gitlab.socsci.ru.nl:msdt/team1920-speechcomparison into refactoring/master

Merge branch 'refactoring/master' of https://gitlab.socsci.ru.nl/msdt/team1920-speechcomparison into refactoring/master