Release 1.0.0b3 (#157)

* Prep 1.0.0b3 changelog

* Fix date header placement

Author: nmuesch

CHANGELOG.md

@@ -1,3 +1,15 @@
+## 1.0.0b3 / 2020-11-18
+
+* [Added] Add the incident schema. See [#154](https://github.com/DataDog/datadog-api-client-python/pull/154).
+* [Added] Add IP prefixes by location for synthetics endpoints. See [#149](https://github.com/DataDog/datadog-api-client-python/pull/149).
+* [Added] Add filter parameter for listing teams and services. See [#148](https://github.com/DataDog/datadog-api-client-python/pull/148).
+* [Added] Add restricted roles to monitor create and edit requests. See [#146](https://github.com/DataDog/datadog-api-client-python/pull/146).
+* [Added] Add 3 new palettes to the conditional formatting options. See [#141](https://github.com/DataDog/datadog-api-client-python/pull/141).
+* [Fixed] Quota & retention are now editable fields in log indexes. See [#150](https://github.com/DataDog/datadog-api-client-python/pull/150).
+* [Fixed] Add patch to support validating nullable values. See [#144](https://github.com/DataDog/datadog-api-client-python/pull/144).
+* [Changed] Change event_query property to use log query definition in dashboard widgets. See [#155](https://github.com/DataDog/datadog-api-client-python/pull/155).
+* [Changed] Rename tracing without limits and traces usage endpoints. See [#145](https://github.com/DataDog/datadog-api-client-python/pull/145).
+
 ## 1.0.0b2 / 2020-11-05
 
 * [Added] Add missing synthetics step types. See [#129](https://github.com/DataDog/datadog-api-client-python/pull/129).