Remove INI parse/emitter.
BREAKING CHANGE! GFM now relies on the "logger" package (Phobos logger proposal)
Deprecated classes from gfm.core.log.

Note about package dependencies:
Assimp, Enet, OpenGL, SDL, Freeimage wrappers still rely on gfm:core because of sanitizeUTF8.
Port GFM examples to std.logger
Merge vuaru's change, getTexImage wrapper.
Using new StdIOLogger(LogLevel.off) instead of a custom NullLogger.
BREAKING CHANGE AGAIN.
Removal of the CBOR module. There is no reason to use CBOR over MessagePack, and furthermore there is no reason to use this module over msgpack-d.