chore: add Changelog for 0.6.4 (#301)

Author: marinsalinas

CHANGELOG.md

@@ -1,4 +1,37 @@
-## 0.7.0 (Unreleased)
+## 0.6.4 (2020-08-27)
+
+**Fixed bugs:**
+
+- Unable to import $external auth users [\#285](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/285)
+- custom\_db\_roles cannot be created with only inherited roles [\#279](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/279)
+- mongodbatlas\_team data provider team\_id null after successful API query [\#277](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/277)
+
+**Closed issues:**
+
+- There is no parity between the Atlas API documentation and the provider doc in regards to alert event\_type values [\#295](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/295)
+- Renaming a custom\_db\_role with attached users is not possible [\#284](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/284)
+- changing cluster to \_NVME fails on commented-out IOPS [\#283](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/283)
+- Error when assigning a custom db role to a database user.  [\#273](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/273)
+- Error when creating `mongodbatlas\_project\_ip\_whitelist` resource [\#266](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/266)
+- Can't create a alert for Replication Oplog Window [\#227](https://github.com/mongodb/terraform-provider-mongodbatlas/issues/227)
+
+**Merged pull requests:**
+
+- fix: added a validation for restore\_window\_days [\#300](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/300) ([PacoDw](https://github.com/PacoDw))
+- update auth\_database\_name [\#299](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/299) ([themantissa](https://github.com/themantissa))
+- Fix \#227 \#232: Added a new Threshold attribute [\#298](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/298) ([PacoDw](https://github.com/PacoDw))
+- Fix \#285: Unable to import $external auth users [\#297](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/297) ([PacoDw](https://github.com/PacoDw))
+- Fixes many testacc [\#296](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/296) ([coderGo93](https://github.com/coderGo93))
+- Fix \#279 \#280 [\#294](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/294) ([PacoDw](https://github.com/PacoDw))
+- GitHub actions tests [\#293](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/293) ([coderGo93](https://github.com/coderGo93))
+- Changed the harcoded links from hashicorp repo to mongodb repo [\#288](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/288) ([coderGo93](https://github.com/coderGo93))
+- add note about container creation [\#287](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/287) ([themantissa](https://github.com/themantissa))
+- Correct cluster labels documentation [\#286](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/286) ([themantissa](https://github.com/themantissa))
+- Add templates to repo [\#282](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/282) ([themantissa](https://github.com/themantissa))
+- Fix \#277: mongodbatlas\_team data provider team\_id null after successful API query [\#281](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/281) ([PacoDw](https://github.com/PacoDw))
+- Create SECURITY.md [\#278](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/278) ([themantissa](https://github.com/themantissa))
+- Update README.md [\#276](https://github.com/mongodb/terraform-provider-mongodbatlas/pull/276) ([themantissa](https://github.com/themantissa))
+
 ## 0.6.3 (July 22, 2020)
 
 **Fixed bugs:**