0.4 03jun2014
* more partial packet fixes
* forgot the syslog import
* fixed name of config file stanza

0.3 03jun2014
* deal with None values from partial packets (e.g., from WMR100 stations)

0.2 29apr2014
* aggregate excluding previous period
* fix trend calculations
* parameterize the wind speed/dir avg intervals
* ensure NULL instead of None in output
* use barometer (slp) instead of pressure (gauge)
* calculate temperature trend

0.1 28apr2014
* initial release as packaged weewx extension
