Added release notes

release.md

@@ -0,0 +1,37 @@
+---
+layout: default
+title: Hatchet
+---
+
+# Release notes
+
+## 0.1.0
+
+No changes from 0.0.20, just time for a minor version release.
+
+## 0.0.20
+
+ * Added a `#thread_context` attribute to the `SimpleFormatter` that is `false`
+   by default, but when set to `true` will output the context of the thread
+   within messages in the same style as the `StandardFormatter`
+
+## 0.0.19
+
+ * Changed core formatters to output an indented backtrace after a message when
+   an error is present, can be disabled via the formatter's `backtrace=`
+   attribute
+
+## 0.0.18
+
+ * Made the presence of a `formatter=` method on appenders optional
+
+## 0.0.17
+
+ * Added the ability to pass an error along with your message
+
+### Bug fixes
+
+ * Fixed the fallback logging if an appender raises an error whilst trying to
+   log a message
+ * Ensured all logging calls truly do return `nil` rather than it just being
+   part of the documented contract