Multiple Improvements Fixed issues: - #35: add-source command failed due to importlib not being imported - #36: csv parsing failed when using a command as input New Features: - #34: setuptools' entry_points can now be used to add parsers do polt - #32: the csv delimiter used by CsvParser can now be specified via cli and the configuration - #36, #39: an --encoding option exists now for the add-source command to specify the input encoding for parsers Improvements: - #40: the left-free subplot area is now minimized more aggressively Code style: - #33: parsers now reside in separate modules