Added irc webclient URL
World/chunk interface

Adding core world/chunk interface.

*Note* `World` will need a way to return all loaded chunks,
but we'll need some discussion as to what containing object structure
should be used.
Add Block, javadoc cleanup

Add ignoresCancelled to SpongeEventHandler

Signed-off-by: Chris Sanders <zidane@outlook.com>
Add majority of the lifecycle events

@cpw feel free to remove any un-necessary for Sponge

Signed-off-by: Chris Sanders <zidane@outlook.com>
Add Item/ItemBlock

Signed-off-by: Chris Sanders <zidane@outlook.com>
Correct my faiure to follow conventions

Signed-off-by: Chris Sanders <zidane@outlook.com>
Add getAPIVersion and getImplementationVersion

Signed-off-by: Steven Downer <grinch@outlook.com>
Added Licence to Item and ItemBlock
Add Entity/Player interfaces

First steps in entity/player interfaces - returning the UUID for all, and last
known name/display name for the Player.

`Entity` -> `LivingEntity` -> `HumanEntity` -> `Player`
Update README PR guidelines

Based on feedback so far
World/Chunk load/unload events

Adds abstract classes for `World`/`Chunk` load and unload events.
Adding BlockEvent abstract class

Adding a base `BlockEvent` interface.
`getChunk` clarifications, `loadChunk` method

Based on @mikeprimm feedback on c34d11d0, renaming chunk coordinates in method sig to `cx`, etc.

Clarifying that `getChunk` returns null if it's not loaded.

Adding a `loadChunk` method, with optional bool to disable generating.
`HumanEntity` properly extendeds `LivingEntity`

We somehow missed this in the last PR.
Add Contribution Guidlines link to README
Add Voxel class

Got to merge that math branch…
Extracting base event "types" into interfaces

`BlockEvent` interface may be combined with any other event interface
rather than limiting child classes to being of one type.

Modifying state events to match the new structure.
Add JSR 305 for @nullable support
Initial commit of Vector{3/2}{i/f/d} interfaces

Based on flow-math stuff
Document the Vector classes