Bukkit

Added event 'on first join' which is called whenever a new player joins the server
Added expression 'shooter [of <projectile>]' to get who shot a projectile
Fixed not being able to set the block in block break events
Fixed not being able to set the world's weather in a weather change event

commit: https://github.com/Njol/Skript/commit/7dbf5dcde1442895c1d9c6ed20a9992bd12e031f

The default location of many block events is at an entity and vice versa. I know the cause but not how to fix this tidily.
  - this is partly fixed in 1.3.7
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