Bukkit

Added arithmetics
Added expression 'spawn [point] [of <world>]'
Improved how large numbers are displayed
Fixed an ArrayIndexOutOfBoundsException
Fixed 'players' being the same as 'player'
Fixed possible issues with the chat event
Fixed an error in the drop effect
Fixed not being able to execute commands of other plugins

commit: https://github.com/Njol/Skript/commit/6b6b726269f78d8c499bf06b172a0baf8bdf7f0a

The damage in damage events is still the raw damage, i.e. without any armour/critical/enchantment modificators applied.
If no world is specified in a periodical event no errors are printed if one uses the event-world (e.g. by using 'time' instead of 'time of <world>'), but it will fail silently when the script is executed.

see also: https://github.com/Njol/Skript/issues?labels=bug&page=1&state=open