Replace Front module with Interface and Story modules
Rename eachYearCallback to yearPassedCallback
Set age of seed when added to a world
Add option to make random people come from border instead of randomly appear in the world
Prevent ticking seed twice when its tile changed
Move and trigger actions instead of move-or-trigger-actions
Distributed ticks mechanic
Prevent having children right after married
Merge branch 'master' of https://github.com/anvoz/world-js