Update Ardunio node slightly in line with latest Windows Serialport patches.
(But there is still a possibly bad underlying problem 
- error not being caught -  in the upstream npm - reported.)
Cross platform fix for Arduino Serial port not there. 
Fix for #428
Remove listener limit on IRC node server connection.

Fixes #431
Wind down excessive logging on IRC node

now only logs connects/reconnects, errors and "raw" input commands
(so you can debug them when you get it wrong)
All other messages appear on the node output anyway.
Don't use abbreviation 'mins' and 'minutes' in the same sentence.

I don't think saving three letters justifies the use of a non-standard
abbreviation.  If we really need to save letters, then the SI units would
be better and for most people to read.
Merge pull request #432 from hindessm/avoid-abbreviation-and-be-consistent

Don't use abbreviation 'mins' and 'minutes' in the same sentence.