keen.io: fixing addons without input
Merge pull request #184 from segmentio/keen-io/addons-without-input

keen.io: fixing addons without input
Release 1.1.47
amplitude: remove clean
churnbee: remove clean
help-scout: remove clean
mailchimp: remove stripNestedObject for reject.type()
preact: remove clean
stacklead: remove clean
stacklead: fix tests for facade 1.4.x
Merge pull request #185 from segmentio/remove/clean

Remove/clean
mixpanel: add page and screen fixtures
mixpanel: add page tests
mixpanel: add page() and screen(), closes #139
deps: use facade fixes for mixpanel
mixpanel: use page options
deps: upgrade to facade 1.4.x
stacklead: new facade fixes .website