Added searching for MBG data from mongo query.
hack: only consider 'grey' sgv records

Quick hack to force predictor to only use actual sgv records.
prepare versions for release
Merge branch 'release/0.4.0'
Merge branch 'release/0.4.0' into dev
add ability to easily id git rev-parse HEAD
convert sgv to string

On my new pebble with the installed app, the SGV value does not show
up unless it is a string type in the json.
Merge pull request #165 from nightscout/hotfix/pebble-sgv-string

Hotfix/pebble sgv string
Merge pull request #166 from nightscout/wip/id-rev

Wip/id rev
Merge pull request #128 from nightscout/wip/mbg

Added searching for MBG data from mongo query.
Merge pull request #6 from nightscout/dev

9.12.14