Clean up CHANGELOG

Author: morgante

CHANGELOG.md

@@ -12,25 +12,20 @@ Extending the adopted spec, each change should have a link to its corresponding
 ### ⚠ BREAKING CHANGES
 
 * Minimum beta provider version increased to 3.1 to allow surge upgrades.
-* beta clusters now have surge upgrades turned on by default. This behavior can be tuned using the max_surge and max_unavailable inputs.
-* moves node pool state location to allow using for_each on them
+* Beta clusters now have surge upgrades turned on by default. This behavior can be tuned using the max_surge and max_unavailable inputs.
+* Moves node pool state location to allow using for_each on them, see the [upgrade guide](./docs/upgrading_to_v7.0.md) for details.
 
 ### Features
 
 * Add a service activation module ([#146](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/146)) ([658ea51](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/658ea516965b18d7c161f89ede32b29e6113fd00))
 * Enable Surge Upgrades by specifying max_surge and max_unavailable (Beta) ([#394](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/394)) ([e4abe78](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/e4abe78279ef100aeb6e4ddc0bde58cabc90acc0))
-* move to using for_each for node pools ([#257](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/257)) ([7d0c9aa](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/7d0c9aaa9c815b933ada882f274b9b1293b59716))
-* Tweak formatting in readme.txt ([#410](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/410)) ([c656a5c](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/c656a5c4ed66914915bb93960940bd40e2615292))
+* Move to using for_each for node pools ([#257](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/257)) ([7d0c9aa](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/7d0c9aaa9c815b933ada882f274b9b1293b59716))
 
 
 ### Bug Fixes
-
-* change pod_security_policy_config type to list(object()) ([#408](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/408)) ([a99352a](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/a99352affaa48b42a653d399685abd1395614685))
+* Change pod_security_policy_config type to list(object()) ([#408](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/408)) ([a99352a](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/a99352affaa48b42a653d399685abd1395614685))
 * Removed dependency on jq from wait-for-cluster.sh script ([#402](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/402)) ([d2a5e28](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/d2a5e28004963062bacc79687ff4fc14826639ee))
 
-
-* Prepare upgrade guide for 7.0 (#407) ([156952d](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/commit/156952d57e3044711efc7f0a207b494e89b28aa6)), closes [#407](https://www.github.com/terraform-google-modules/terraform-google-kubernetes-engine/issues/407)
-
 ## [v6.2.0] - 2019-12-27
 
 ### Fixed