docs(Release): Update Changelog (#844)

Author: slim-bean

CHANGELOG.md

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+# 0.3.0 (unreleased)
+
+# 0.2.0 (2019-08-02)
+
+There were over 100 PR's merged since 0.1.0 was released, here's a highlight:
+
+### Features / Enhancements
+
+* **Loki**:  [521](https://github.com/grafana/loki/pull/521) Query label values and names are now fetched from the store.
+* **Loki**:  [541](https://github.com/grafana/loki/pull/541) Improvements in live tailing of logs.
+* **Loki**: [713](https://github.com/grafana/loki/pull/713) Storage memory improvement.
+* **Loki**: [764](https://github.com/grafana/loki/pull/764) Tailing can fetch previous logs for context.
+* **Loki**: [782](https://github.com/grafana/loki/pull/782) Performance improvement: Query storage by iterating through chunks in batches.
+* **Loki**: [788](https://github.com/grafana/loki/pull/788) Querier timeouts.
+* **Loki**: [794](https://github.com/grafana/loki/pull/794) Support ingester chunk transfer on shutdown.
+* **Loki**: [729](https://github.com/grafana/loki/pull/729) Bigtable backup tool support.
+
+
+* **Pipeline**: [738](https://github.com/grafana/loki/pull/738) Added a template stage for manipulating label values.
+* **Pipeline**: [732](https://github.com/grafana/loki/pull/732) Support for Unix timestamps.
+* **Pipeline**: [760](https://github.com/grafana/loki/pull/760) Support timestamps without year.
+
+
+* **Helm**:  [641](https://github.com/grafana/loki/pull/641) Helm integration testing.
+* **Helm**: [824](https://github.com/grafana/loki/pull/824) Add service monitor.
+* **Helm**: [830](https://github.com/grafana/loki/pull/830) Customize namespace.
+
+
+* **Docker-Plugin**: [663](https://github.com/grafana/loki/pull/663) Created a Docker logging driver plugin.
+
+
+* **Fluent-Plugin**: [669](https://github.com/grafana/loki/pull/669) Ability to specify keys to remove.
+* **Fluent-Plugin**: [709](https://github.com/grafana/loki/pull/709) Multi-worker support.
+* **Fluent-Plugin**: [792](https://github.com/grafana/loki/pull/792) Add prometheus for metrics and update gems.
+
+
+* **Build**: [668](https://github.com/grafana/loki/pull/668),[762](https://github.com/grafana/loki/pull/762) Build multiple architecture containers.
+
+
+* **Loki-Canary**: [772](https://github.com/grafana/loki/pull/772) Moved into Loki project.
+
+### Bugfixes
+
+There were many fixes, here are a few of the most important:
+
+* **Promtail**: [650](https://github.com/grafana/loki/pull/650) Build on windows.
+* **Fluent-Plugin**: [667](https://github.com/grafana/loki/pull/667) Rename fluent plugin.
+* **Docker-Plugin**: [813](https://github.com/grafana/loki/pull/813) Fix panic for newer docker version (18.09.7+).
+
+
+# 0.1.0 (2019-06-03)
+
+First (beta) Release!