Removed reference to non-existing parameter in getAccidentalEdoSteps().

• Fixed a bug that could cause the plugin to detect a key signature change where there wasn't one.
• Fixed a bug that would prevent the plugin from working if the score contained annotations that don't contain text, like fermatas.

• The text for custom key signaturs now ignores whitespace characters.
• Added support for triple sharps and flats.
• Code optimisation in the calculation of the base tuning offset from the tpc property.
• Code optimisation in the check for a key signature change.

• Added support for custom key signatures.
• Improved error messages.

• The plugin now keeps track of which microtonal accidental is applied to each note, and will automatically apply the correct tuning offset on the following notes without an explicit accidental within the same measure.
• Added support for the following accidentals:
  • ARROW_DOWN
  • LOWER_ONE_SEPTIMAL_COMMA

• Added support for tuning only the notes within the current selection.
• Renamed the function getAccidental() to getAccidentalEdoSteps(), and used in more places where its functionality was previously implemented.
• Reworked the supportedAccidentals mapping to use the accidental name as keys. Reworked the functions that interact with it accordingly.

• Removed the property TPC from supportedAccidentals. Reworked calculateTuningOffset() to check DEFAULT_OFFSET instead.
• Removed the function positiveModulo(). Reworked the function getNoteLetter() to not need positiveModulo() anymore.
• Made the name of the release files consistent with the name of the plugin elsewhere.

• Added support for more accidentals, including Sagittal Notation.
• Reworked the way the plugin handles the accidentals. Now every property of an accidental is stored inside a single mapping.

• Updated the name in the Musescore3 menu to be consistent with the Musescore4 name.
• Reworked the function getAccidental(). Now it uses the mapping accidentalsEdoSteps, instead of a series of hard coded values.
• Improved the handling of exceptions.
• Added a thumbnail image.

• stepSize and fifthDeviation are no longer hard coded, but are instead calculated from the definition of a 31EDO step being 1200 / 31 ¢.
• Added the function logMessage(), which automatically redirects the messages depending on the Musescore version.
• Introduced the function getNoteLetter(), and reworked the way note names are calculated.
• Modified getAlteration(), so that it works for both Musescore3 and Musescore4 without having a separate logic for each one.