Links: fix bug
Organism basicrules: fix bug
Clean orphan pyc files script
Organism basicrules: rename some rules
Organism: pass UTC-corrected search times
Organism basiculres: change implementation of occur_regularly (+ fix bug)
Organism basicrules: change implementation of except_regularly (+ fix bug)
Organism basicrules: change implementation of occur_regularly_group (+ fix bug)
Organism basicrules: fix bug in occur_yearly
Organism basicrules: fix bug in occur_monthly rules
Organism basicrules: optimize calculation of overlapping time for monthly rules
Script to update a database from 0.4.1 to 0.5.0
Add note to RELEASE
Prepare 0.5.0