Added ThreadedLoggerAttachments
Added autoloading of base namespace classes
Finished #1555 todo list
Merge pull request #1555 from PocketMine/LoggerAttachment

Implement LoggerAttachment (fixes #1547)
Made Server::getLogger() return a AttachableThreadedLogger
Made logging better, plugin loggers can be attached by others
Updated build script
Fixed ServerScheduler::addTask() period
Added quotes to start.sh
Fixed start.sh script
Fix HandlerList.php wrong var name
Merge pull request #1561 from PEMapModder/patch-1

Fix HandlerList.php wrong var name
Improved chunk ticking
Fixed typo on updater
Use chunk unload queues in Level
Improved chunk sending, moved chunk encoding and compression to another thread
Fixed worker pool AsyncTask storage
Added LevelInitEvent
Added LevelSaveEvent
Added LevelUnloadEvent