Resolve "Mini timetables should also work with parallel lessons"

Closes #45

See merge request !39

Resolve "Icon for breaks is not helpful"

Closes #8

See merge request !40

Resolve "Show more courses on the right side of timetable management"

Closes #16

See merge request !34

Resolve "Set certain widths to full width"

Closes #36

See merge request !33

Recurrence builder

See merge request !32

Release 0.1.0.dev1

See merge request !30

Resolve "Switch validity range and group select"

Closes #42

See merge request !29

Bump version to 0.1.0.dev1

See merge request !28

Resolve "Drop substitution stuff"

Closes #6

See merge request !27

Resolve "Adapt to refactored CRUD lists"

Closes #40

See merge request !26