Changelog for sendgrid-v3-1.0.0.1

Revision history for sendgrid-v3

Aditya Manthramurthy: Skip running tests in CI if API keys are not set (#27) (565d5a1)
Aditya Manthramurthy: Update ChangeLog.md with info about previous releases (#26) (2601481)
Fumiaki Kinoshita: make the _mailAddressName field Text again; toJSON omits it if it's empty (#25) (dd9b795)
Aditya Manthramurthy: Attempt to fix CI (#23) (43cb429)
Aditya Manthramurthy: Fix tests (#24) (b1e2ce3)
Fumiaki Kinoshita: [major bump] provide headers as an object, not array (#22) (6c5bcf0)
Aditya Manthramurthy: Enable Github CI (840dbf7)
Aditya Manthramurthy: Build with GHC 8.10.3 (7a9394f)

marcelbuesing: Add deployment version condition. (22f55f9)
Aditya Manthramurthy: Allow building with GHC 8.10 and add build matrix for travis (b9ec01e)
Aditya Manthramurthy: Allow compilation on GHC 8.8 (aaacc77)
Tristan McLeay: fix docs: ensure env vars are colllated (4a14207)
marcelbuesing: Setup hackage deployment on tagged builds (e4de4f6)
5outh: Make MailContent nullable (f33c9eb)
5outh: Serialize Substitutions as an Object, not an Array (82f02ac)
5outh: Omit Nothing fields in Personalization (7dd1492)
5outh: Update cabal version (2645d68)
5outh: Fix JSON serialization of SendGrid payloads (f174c9e)
5outh: Update README/Doc scripts (10666aa)
5outh: Add version bounds to additional dependencies (881cd35)

Finn Espen Gundersen: Explicit JSON encode to allow easing version constraints of base and lens.
Patrick Brisbin: Support for dynamic_template_data https://sendgrid.com/docs/ui/sending-email/how-to-send-an-email-with-dynamic-transactional-templates/
Steven Leiva: Fixed example code in README and source.