chore: amend changelogs (#737)

Author: alrex

ext/opentelemetry-ext-django/CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Add support for django >= 1.10 (#717) 
+
 ## 0.7b1
 
 Released 2020-05-12

ext/opentelemetry-ext-grpc/CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## Unreleased
+
+- lint: version of grpc causes lint issues
+  ([#696](https://github.com/open-telemetry/opentelemetry-python/pull/696))
+
 ## 0.6b0
 
 Released 2020-03-30

ext/opentelemetry-ext-jaeger/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Transform resource to tags when exporting
+  ([#645](https://github.com/open-telemetry/opentelemetry-python/pull/645))
+
 ## 0.6b0
 
 Released 2020-03-30

ext/opentelemetry-ext-opencensusexporter/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Rename otcollector to opencensus
+  ([#695](https://github.com/open-telemetry/opentelemetry-python/pull/695))
+
 ## 0.5b0
 
 Released 2020-03-16

ext/opentelemetry-ext-zipkin/CHANGELOG.md

@@ -2,6 +2,9 @@
 
 ## Unreleased
 
+- Transform resource to tags when exporting
+  ([#707](https://github.com/open-telemetry/opentelemetry-python/pull/707))
+
 ## 0.7b1
 
 Released 2020-05-12

opentelemetry-api/CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+- Handle boolean, integer and float values in Configuration
+  ([#662](https://github.com/open-telemetry/opentelemetry-python/pull/662))
+- bugfix: ensure status is always string
+  ([#640](https://github.com/open-telemetry/opentelemetry-python/pull/640))
+
 ## 0.7b1
 
 Released 2020-05-12

opentelemetry-sdk/CHANGELOG.md

@@ -2,7 +2,14 @@
 
 ## Unreleased
 
-- Validate span attribute types in SDK (#678)
+- Validate span attribute types in SDK
+  ([#678](https://github.com/open-telemetry/opentelemetry-python/pull/678))
+- Specify to_json indent from arguments
+  ([#718](https://github.com/open-telemetry/opentelemetry-python/pull/718))
+- Span.resource will now default to an empty resource
+  ([#724](https://github.com/open-telemetry/opentelemetry-python/pull/724))
+- bugfix: Fix error message
+  ([#729](https://github.com/open-telemetry/opentelemetry-python/pull/729))
 
 ## 0.7b1