Release 4.4.5

Release 4.4.4

Release 4.4.3

Release 4.4.2

Version Bump v4.4.1: Package not uploaded correctly

Version Bump v4.3.0: Dynamic Template support

Version Bump v4.2.1: Update to latest Jackson recommended dependency

Version Bump v3.2.2: Update to latest Jackson recommended dependency

Version Bump v4.2.0: Hacktoberfest rollup release

Version Bump v4.1.2: PR sendgrid#220 Alway serialize click-tracking p…

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