Merge pull request #46 from evite/feature/EVT-22139-upgrade-firebase

Feature/evt 22139 upgrade firebase

0.1.11 correct implementation of child_moved

0.1.11 correct implementation of child_moved

0.1.10 reject the document values promise

0.1.9 add scrollCollection function

0.1.8 reorder the collection on changes

0.1.7 add order by queries support

0.1.6 build for browsers - for those that don't transpile vendors

0.1.5 add onDisconnect

Merge pull request #1 from antoniopacheco/timestamp_fix

changed from static to public timestamp variable