Some portion of optimizations:

* Clear outgoing packet queue after player disconnect
* Disable sleep between chunk saving
* Put 2x4096 bytes instead 2048x4 bytes for region file aligment
* Using map to search player by name instead iterating over all players
* Some tweaks for decorations (item frames, maps)

build.gradle

@@ -173,6 +173,7 @@ def generateManifest(boolean legacy = false) {
             'KCauldron-Channel'     : project.name,
             'KCauldron-Version'     : project.version,
             'KCauldron-Legacy'      : legacy,
+            'KCauldron-Official'    : project.hasProperty('officialBuild'),
             'Implementation-Vendor' : 'Prototik',
             'Implementation-Title'  : project.name,
             'Implementation-Version': project.version,