Merge branch 'AS_year_week' of...

Merge branch 'AS_year_week' of https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge-template into AS_year_week

CHANGELOG.md

@@ -3,6 +3,10 @@
 ### *unreleased*
 
 - add `eccodes` to [`environment.yml`](https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge-template/-/blob/master/environment.yml) to resolve `cfgrib` `ImportError` (https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge/-/issues/26, !15, [Aaron Spring](https://renkulab.io/gitlab/aaron.spring))
+- Create categories by `groupby('week')`. (https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge/-/issues/29, !18 [Aaron Spring](https://renkulab.io/gitlab/aaron.spring) with help from [Sergi Bech Sala](https://renkulab.io/gitlab/sbechsal7) and [Llorenç Lledó](https://renkulab.io/gitlab/llledo))
+- Regrid observations conservatively with [xesmf](https://pangeo-xesmf.readthedocs.io/) (https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge/-/issues/32, !18, [Aaron Spring](https://renkulab.io/gitlab/aaron.spring) with help from [Arlan Dirkson](https://renkulab.io/gitlab/arlan.dirkson))
+- Observations now have data at longitude=0 (https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge/-/issues/35, !18, [Aaron Spring](https://renkulab.io/gitlab/aaron.spring) with help from [Sergi Bech Sala](https://renkulab.io/gitlab/sbechsal7))
+- Missing `tp` observations after leap days added (https://renkulab.io/gitlab/aaron.spring/s2s-ai-challenge/-/issues/31, !18, [Aaron Spring](https://renkulab.io/gitlab/aaron.spring) with help from [David Landry](https://renkulab.io/gitlab/david.landry])
 
 
 ### 2021-06-19: `v0.3.1` *release*