Release 1.0.0-beta14

Support for LegionBoard (thanks to @AltNico)

Release 1.0.0-beta5

• Filter substitutions and diffs by teacher
• add some javadocs

Release 1.0.0-beta4

• Add text output for teacher schedules
• Add substitutionFrom and teacherTo attributes

Version 1.0.0-beta3

• Fixed #4