Update changelog for version 0.3.0
# Revision history for hslua-module-text
+## 0.3.0 -- 2020-08-15
+
+- Use self-documenting module. This allows to include
+ documentation with the module definition, and to auto-generate
+ documentation from that. Requires hslua-1.2.0 or newer.
+
+- Run CI tests with all GHC 8 versions, test stack builds.
+
## 0.2.1 -- 2019-05-04
- Require at least HsLua v1.0.3: that version has better support
