minor, provide MONTHLY filler rrul_fill_mly()

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
chore, call montly filler upon freq==MONTHLY

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
minor, also actually print the frequency upon MONTHLY

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
test, provide regression file for MONTHLY freqs

Signed-off-by: Sebastian Freundt <hroptatyr@fresse.org>
Merge branch 'core/evrrul'

* core/evrrul:
  test, provide regression file for MONTHLY freqs
  minor, also actually print the frequency upon MONTHLY
  chore, call montly filler upon freq==MONTHLY
  minor, provide MONTHLY filler rrul_fill_mly()