add cross browser tests
clean: --force to ignore errs
Release 2.4.15
Updating analytics.js-integrations
Release 2.4.16
update analytics.js-integrations
Release 2.4.17
Updating analytics.js-integrations
Release 2.4.18
Merge pull request #408 from segmentio/cross-browser-tests

add cross browser tests
trackLink: support svg anchor tags
travis: node 0.11.13
tests: skip svg tests on legacy browsers
Merge pull request #418 from segmentio/svg/a

trackLink: support svg anchor tags
Release 2.4.19
bump integrations
Release 2.4.20
Add noConflict
Add test for noConflict