README now has HTTPS links.

Merge pull request cuberite#1960 from mc-server/FixInterPluginCalls

Fix inter plugin calls

Merge pull request cuberite#1463 from mc-server/sp_docs

Add docs for HOOK_SERVER_PING

The last version of ProtoProxy that uses the 1.7.2 - 1.7.5 network pr…

…otocol

ProtoProxy: Fixed EntityProperties packet parsing.

The modifiers list is per-property, not per-packet.