Fix instances where Signs have null lines. Addresses BUKKIT-684
Fix entities not having valid "isValid" states. Addresses BUKKIT-2366
Use constant Player for EnderPearls

Also make sure players are online before proceeding to each event
Rewrite scheduler. Fixes BUKKIT-1831, and BUKKIT-845

The new scheduler uses a non-blocking methodology. Combining volatile
references to make a linked reference chain, with the atomic reference
handling the tail, tasks are queued without waiting for locks. The main
thread will no longer limit the length of time spend for scheduled tasks,
but no task will run twice in the same tick. Scheduling a new task inside of
a synchronous task will always run the new task during the same tick,
assuming there is no supplied delay > 0.

Asynchronous tasks are now run using a thread pool. Any thread-local
implemenation should now account for threads being reused between
executions.

Race conditions were carefully examined and the order of logic is now very
important. Each task is placed in a secondary collection before removal from
primary collections. Thus, by reading tasks from the collections in the same
order they travel, it retains state-safety. This does make modifications
less responsive in some situations, as the task may be transitioning before
the modifier accesses it. This cost outweighs the requirement to synchronize
on the scheduler; previously any conflict would be first-come-first-serve,
with the main thread backing out arbitrarily.
Refactor CraftBukkit dependencies. Fixes BUKKIT-2329

The maven shade plugin has the ability to change the namespace for
included dependencies and packages. This change is being implemented to
remove all conflicts with any possible libraries in an execution
environment.

The only dependencies to be refactored are specific to CraftBukkit. To
refactor dependencies included with Bukkit breaks any plugin compiled
against those specific dependencies, especially ebeans--an API
specifically encouraged for database management.
Don't refactor packages with natives
Fix EmptyChunk's not sending to the Client correctly. Fixes BUKKIT-2206
Update to 1.3.2
Updated version to 1.3.2-R0.1 in pom.xml for Beta.
Updated version to 1.3.2-R0.2-SNAPSHOT for development towards next release.
Fix empty chunks not sending biome properly and causing client side issues. Fixes BUKKIT-2396
Fix Future task waiting logic. Fixes BUKKIT-2408

Previously, the timeout would erroneously get converted to milliseconds
twice. The second conversion was removed.

Spurious wakeups were not handled properly, and would instead throw a
TimeoutException even if the waited time was not reached..
Fix BUKKIT-2419: PlayerAbilities not being updated on teleport/respawn

Minecraft resets abilities based on what it knows client side, when someone dies and is in "survival," by default they should be in "survival." However, we allow modification of the PlayerAbilities, so we send this update out to the client.

Oh and, the format of the commit is like this to see if it looks any good. :)
Fix crash from console-commands throwing exception. Fixes BUKKIT-2479

When 1.3.1 was released, a try-catch block was removed from the tick
loop that called the method in NMS to handle commands. This restores a
try-catch to prevent the console from crashing the server.
Add information about async tasks to CrashReports. Addresses BUKKIT-2491

Async tasks are notorious for causing CMEs and corrupted data when
accessing the API. This change makes a linked list to track recent tasks
that may no longer be running. It is accessed via the toString method on
the scheduler. This behavior is not guaranteed, but it is accessible as
such currently.

Although toString is located in the scheduler, its contract does not
guarantee an accurate or up to date call when accessed from a second
thread.
Change local jline checks to not use String literals. Fixes BUKKIT-2455.

Refactoring dependencies 'changes' the string literal in the code. This
commit changes the literal to instead use a char[] to initialize a new
String. On a bytecode level, there will not exist a String literal for these
two values; the shade plugin will no longer refactor them.

Refactoring jline also changes the other String literals we use for
notifying jline of the current state. To insure that our local code reflects
the inner logic in jline, the key value was changed to the static final
variable located in TerminalFactory. Likewise, UnsupportedTerminal uses the
explicit class name (as reflection is used later with the value that has
been set).
Bulk pending cleanup.
[Bleeding] Add autosave interval setting in bukkit.yml. Adds BUKKIT-2507

The new setting is located at "ticks-per.autosave". By changing this
value, it affects how often a full save is automatically executed,
measured in ticks.

This value is defaulting to 0 (off) because we believe that the vast
majority of servers already have a third-party solution to automatically
saving the server at set intervals. Having the built in auto-save disabled
by default ensures that we are not saving things twice; doing so leads to
absolutely no benefits, but results in detrimental and noticeable
unnecessary performance decrease.

For servers that do not use an automated external script to perform saves,
this setting can be turned on by setting the value higher than 0, with 900
being the value used in vanilla.
Reverted changes to chunk saving behaviour.
[Bleeding] Avoid spawn checks on empty worlds. Fixes BUKKIT-2508

Change a server wide check for players to be world specific. Worlds
without players will not spawn entities.