v4.1.0

This release makes the CSV -> MIDI conversion more resilient against trailing commas: If your editor (i.e. Excel) exports CSV files with trailing commas, pymidicsv will now be able to still parse and convert them.
Please note that there is one exception to this rule: SysEx events (due to being able to carry binary data of arbitrary length) can not take a guess as to whether a trailing comma is intended or not. As such, if you process MIDI files that contain such events, you will still have to take care of trailing commas yourself, as the library can't possibly guess the intent behind the value.