tag v4.2.1

tag v4.2.0

tag v4.1.4

Merge pull request intercom#582 from intercom/seanhealy/bumpgem

Bump intercom to 4.1.3

Bump version to 4.1.2 (intercom#560)

Merge pull request intercom#538 from intercom/mmurray/bump_version_411

Bump version to 4.1.1

Bump intercom to 4.1.0 (intercom#534)

Merge pull request intercom#518 from intercom/mmurray/version_bump

 Bump intercom to 4.0.1

Merge pull request intercom#512 from intercom/conorkeating/release-v4…

….0.0

Conorkeating/release v4.0.0

Bump version to support the unstable API version (intercom#506)