Added Help/About dialogs in PNV.
Added PostgreSQL support to query()
Merge origin/master
Potentially added support for redstone_changed events.
Fixed redstone_changed.

Also, updated some methods that bukkit changed. This could cause incompatiblities with existing servers, but there is nothing I can do about it.
Change query() to return column labels.

This prevents queries such as SELECT foo AS bar FROM table; from returning an array like {foo: 1} and instead returning {bar: 1} as requested in the query.
Added parse_date(), the reverse of simple_date()
Added array_deep_clone()
Added custom sort to array_sort
Revert "Added array_deep_clone()"

This reverts commit fef6e4b57db2cf954601c5f4cabc4f40ae860d8c.
Fixed a bug where @a[0] = @b[0] = 'value'; didn't work.
Added world related events (tree_grow, world_load, world_unload, world_save).
Added some default methods in AbstractEvent.
Added send_resourcepack()
Added send_resourcepack()
Added send_resourcepack()
Fixed my indents.
Merge pull request #236 from VergilPrime/master

Added send_resourcepack()
Revert "Added some default methods in AbstractEvent."
Minor fixes related to the reverting.