Merge pull request #85 from madeddie/master

New version of nma package available
Thanks @madeddie
Yes - nailing down the pre-reqs is a decision we have made... even if (as in this case) it does break us occasionally.
re-categorise Geohash node as location
Make Rawserial node fail more quietly
Correct timezone param in mysql node
Merge branch 'master' of https://github.com/node-red/node-red-nodes