upgrade integrations to 0.5.0
Release 1.3.17
upgrade integrations to 0.5.1
Release 1.3.18
upgrade querystring to 1.2.0
Release 1.3.19
add firefox
upgrade integrations to 0.5.3
Release 1.3.20
add "invoke" event
Release 1.3.21
upgrade integrations to 0.5.4
Release 1.3.22
update querystring to 1.3.0
upgrade integrations to 0.5.5
Release 1.3.23
move analytics.js-integration to dev deps
Release 1.3.24
upgrade integrations to 0.5.6
Release 1.3.25