Hello folks, 
	 
	I was wondering whether forge uses official mojang mappings/where i can find obfuscation mappings for forge? 
	also, I know older versions aren't supported in this forum but I'll still ask in hope for someone to be kind enough to answer my question, 
	I have installed an older version of forge (1.8.8) and noticed that there's no jar in versions/forge-1.8.8-<build>, how exactly does that work? And did they modify vanilla mappings in 1.8.9 in any way?  
	 
	Thanks in advance.