bumping carrier version for ses and smtp

Added tag v0.2.3 for changeset 7a2af955ae05

README update

go-message bump

bumping carrier version for ses and smtp

Added tag v0.2.2 for changeset 77f3873bc130

Removing toolkit

Fixing function call for new go-smtp

carrier bumps

Added tag v0.2.1 for changeset e4edced96af3

Library updates

smtp module rename

smtp/ses updates

Added tag v0.2.0 for changeset 2bc55dea0f16

Module rename

Updating ses and smtp modules

Added tag v0.1.3 for changeset f3ff9a6f0841

Adding OutboxService for use in tests, etc.

Carrier version bump

Added tag v0.1.2 for changeset 246377e0783c