Release v0.2.4

Changed

• As with the atc0005/send2teams v0.2.3 release, this release still
  references our fork for now
  • further changes are being developed on our fork for potential inclusion
    upstream

Fixed

• (GH-23) Update go.mod to use v1.3.0 of dasrick/go-teams-notify package
  • changes temporarily provided by our fork as noted in the
    v0.2.3 release notes have been merged upstream

References

• See the v0.2.4 milestone for the issues associated with this release.
• See our CHANGELOG for more information.