changes for 1.9 and added block updating

working skins, entity data (still todo for viewers), better chunk sending, working animations...

A new attempt at GoMine... Removed useless multi-protocol support, have to work on start game packet and other stuff to get player to join the world... currently the player crashes in the 'loading resources' screen

Once again log loaded resource packs.

ISSUE_TEMPLATE: Fixed a couple typos.

Refactored ConsoleReader -> text/CommandReader, made it a lot more useful for other uses too.

logger: Fixed typo.

Move work on inventories, in particular to adding/removing items.

Fixed list reading from wrong compound.

Made a start on a basic inventory, also added tests for it.

Some work on equality checking between items, moved cachedNBT to item stack. (Was supposed to be there, but I must have been sleepy)

Completely got rid of numeric IDs in the manager API. Made a start on some conversion maps, implemented a way for item stacks + types with custom behaviour.

Moved Minecraft protocol Get/Put functions to minecraft_stream, use block positions where adequate, cleaned up some ugly function booleans.

Replace backslashes in server path with normal slashes for consistency.

Added packet functions for item writing/reading.