BIP 100 is an old blocksize increase proposal that was recently amended by Jeff Garzik to make it more compatible with BU style signalling I think. It seems to have disappeared from github gist entirely, so I'd be interested if someone could find it.
If I remember correctly, it allows the blocksize to increase or decrease by a certain percentage every difficulty adjustment period.
BIP100 is about: "Replacing the static 1M block size hard limit with a hard limit set by coinbase vote, conducted on the same schedule as difficulty retargeting."
https://github.com/jgarzik/bip100/blob/master/bip-0100.mediawikiI noticed that Bitcoin.com and some miners from ViaBTC started signalling BIP100 today.
Someone can tell me why this old scaling solution is gaining so much attention now?