Point Chartbeat readme link to actual homepage
Add useCanonical to options and _sf_async_config with default value true
Preserve existing _sf_async_config values unless overridden by via settings/defaults
Replace obsolete protocol-specific script load URLs with protocol-agnostic URL
Fix issue where Chartbeat script loads and executes before document.body exists

The Chartbeat script immediately accesses document.body on execution so it must
be sure document.body exists prior to loading.
fixing user_id issue and adding tests
Merge pull request #166 from segmentio/fix/adroll-userid

fixing user_id issue and adding tests
Release 0.9.1
Quantcast: fix exception in identify()

In some circumstances, if identify() is called after the Quantcast
script is loaded, the queue may be empty and thus the identify call may
throw an exception. This commit adds some more robustness to only add
the `hid` property if the item exists.

Fixes https://github.com/segmentio/analytics.js-integrations/issues/165
migrate facebook ads to new javascript api
debug removing iframe for curebit on multiple .page() calls
update errorception api key
Release 0.9.2
curebit: make ready on load so iframes have a chance to be rendered
Release 0.9.3
google-analytics: fix custom metrics, remove from page/track/group, closes #177
Adding Appcues integration.
fix kissmetrics page tracking
properly check that facebook is loaded
Merge pull request #182 from segmentio/fix/facebook

properly check that facebook is loaded