populate the changelog (#99)

* fill in the changelog

* bug fixes

* pull request changelog

* use the proper role

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,4 @@
+- [ ] closes #xxxx
+- [ ] Tests added
+- [ ] User visible changes (including notable bug fixes) are documented in `changelog.md`
+- [ ] New functions/methods are listed in `api.rst`

docs/changelog.md

@@ -2,6 +2,36 @@
 
 All notable changes to this project will be documented in this file.
 
+## 0.1.0 (_unreleased_)
+
+### Enhancements
+
+- derive cell boundaries ({pull}`30`)
+- add grid objects ({pull}`39`, {pull}`57`)
+- decoder function ({pull}`47`, {pull}`48`)
+- rename the primary grid parameter to `level` ({pull}`65`)
+- interactive plotting with `lonboard` ({pull}`67`)
+- expose example datasets through `xdggs.tutorial` ({pull}`84`)
+
+### Bug fixes
+
+- fix the cell centers computation ({pull}`61`)
+- work around blocked HTTP requests from RTD to github ({pull}`93`)
+
+### Documentation
+
+- create a readme ({pull}`70`)
+- create the documentation ({pull}`79`, {pull}`80`, {pull}`81`, {pull}`89`)
+- fix headings in tutorials ({pull}`90`)
+- rewrite the readme ({pull}`97`)
+
+### Internal changes
+
+- replace `h3` with `h3ronpy` ({pull}`28`)
+- setup CI ({pull}`31`)
+- tests for the healpix index ({pull}`36`)
+- testing utils for exception groups ({pull}`55`)
+
 ## 0.0.1 (2023-11-28)
 
 Preliminary version of `xdggs` python package.