Fire BlockPlaceEvent for Half Slab Completion

Fixes BUKKIT-5390
Add support for fetching hidden players via Spigot object
Merge pull request #119 from minecrafter/master

Add support for fetching hidden players via Spigot object
Allow Disabling Creative Item Filter
Cap Channel Registrations to 128 entries
Upstream merge
Re-add the replace-commands feature
Make the TPS command accurate by averaging over the sample interval, not just the current tick.
Set lastTick to prevent first few ticks from being too quick
Disable timings off as well
Unfinalize the isDisconnected() method by bukkit.
Return entity-tracking field other to intended usage.
Fix ClearTickList to return correct value

Previously it always returned false, this fixes it to return whatever value the user has it set to.
Update SHA1 Info
Merge pull request #121 from Zbob750/patch-1

Fix ClearTickList to return correct value
Silent Lightning API
Update "Don't special case x move value" patch to ensure that move events are always fired, regardless if there are any "special cases"
Normalize spaces on when reading a chat packet
Use one PermissibleBase for all Command Blocks.

This fixes issues with too many command blocks lagging or crashing the server, as well as just increases their performance in general.
Prevent hoppers from loading chunks