Quartz: offset from the last day of the month currently not supported

[jmrozanec]

Description: Currently expressions with an offset from the last day of the month are not supported. The feature is described at Quartz tutorial.
Example:
CronParser parser = new CronParser(CronDefinitionBuilder.instanceDefinitionFor(CronType.QUARTZ));
parser.parse("* * * L-3 * ?");
Output: java.lang.IllegalArgumentException: java.lang.NumberFormatException: For input string: "L"
Expected behaviour: Properly parse the expression, without throwing an exception.