CyanogenMod's developer community has been one of the best android development communities. The only reason why CyanogenMod came to an end is because of the bad business decisions taken by Cyanogen Inc.'s owner.
The developers haven't given up, the developers worked for CyanogenMod have joined hands together and has started at the place where CyanogenMod left. The best thing about the Lineage OS is, I've personally tested it on my smartphone and it is smooth and simple, in fact it has some features which the CyanogenMod didn't have.
