chore: update readmes for release (#3306)

* chore: update readmes for release

* PR comments

Author: devjgm

google/cloud/bigtable/README.md

@@ -42,7 +42,11 @@ Apache 2.0; see [`LICENSE`](../../../LICENSE) for details.
 
 ## Release Notes
 
-### v1.6.x - TBD
+### v1.7.x - TBD
+
+### v1.6.x - 2020-01
+
+* feat: new functions to create Chain and Interleave filters from ranges of Filter objects
 
 ### v1.5.x - 2019-12
 * feat: implement Bigtable sync vs. async benchmark (#3276)

google/cloud/storage/README.md

@@ -44,7 +44,17 @@ Apache 2.0; see [`LICENSE`](../../../LICENSE) for details.
 
 ## Release Notes
 
-### v1.8.x - TBD
+### v1.9.x - TBD
+
+### v1.8.x - 2020-01
+
+* **BREAKING CHANGE**
+  * feat: move creating prefix marker to ComposeMany (#3296)
+* feat: implement parallel uploads. For large files this can improve the upload
+  bandwidth by a factor of 20. Note that in this release such uploads cannot be
+  resumed after a program restart. (#3279)
+* feat: support optionsRequestedPolicyVersion query parameter in GetBucketIamPolicy
+* fix: setting options in requests accepts crefs (#3287)
 
 ### v1.7.x - 2019-12
 * fix: add logic to ObjectWriteStreambuf for handling jumps in upload ranges to fix #3280 (#3283)