add pr reference for deprecations note
- **Breaking changes:** Deprecated `XarrayZarrRecipe` manual stage methods. Manual execution can be
performed with any of the executors described in {doc}`../recipe_user_guide/execution`. Also deprecated
-`FilePattern(..., is_opendap=True)` kwarg, which is superseded by `FilePattern(..., file_type="opendap")`.
+`FilePattern(..., is_opendap=True)` kwarg, which is superseded by `FilePattern(..., file_type="opendap")`. {pull}`362`
- Added `serialization` module along with `BaseRecipe.sha256` and `FilePattern.sha256` methods.
Collectively, this provides for generation of deterministic hashes for both recipe and file
pattern instances. Checking these hashes against those from a prior version of the recipe can be
