Created MPD library for Memory Protection Devices component which is a 4 battery (18650) holder.
Did initial work on MPD battery holder.
18-650 battery holder in MPD.lbr
Made minor changes to 18-650 battery holder in MPD
Added 18-650 4cell Battery Holder
Merge branch 'master' of https://github.com/strugglebus/Component-libraries

Conflicts:
	partsdb.txt