inspectlet: add tagging session on track, fixes segmentio/analytics.js#294
drip: add drip integration with tests, fixes segmentio/analytics.js#304
lucky-orange: added lucky orange integration, fixes segmentio/analytics.js#309
bugsnag: add bugsnag integration, fixes segmentio/analytics.js#173
0.2.0

* bugsnag: add bugsnag integration
* lucky-orange: added lucky orange integration
* drip: add drip integration
* inspectlet: add tagging session on track
merged