Merge pull request #3680 from OAI/earth2marsh-patch-1

Update MAINTAINERS.md

Author: lornajane

MAINTAINERS.md

@@ -4,6 +4,12 @@
 * Marsh Gardiner [@earth2marsh](https://github.com/earth2marsh)
 * Ron Ratovsky [@webron](https://github.com/webron)
 
+## Provisional
+* Lorna Mitchell [@lornajane](https://github.com/lornajane)
+* Mike Kistler [@mkistler](https://github.com/mkistler)
+* Miguel Quintero [@miqui](https://github.com/miqui)
+* Ralf Handl [@ralfhandl](https://github.com/ralfhandl)
+
 ## Emeritus
 * Mike Ralphson [@MikeRalphson](https://github.com/MikeRalphson)
 * Uri Sarid [@usarid](https://github.com/usarid)