Prepare the 2.5.0rc0 release. (pantsbuild#12013)

[ci skip-rust]

CONTRIBUTORS.md

@@ -224,4 +224,5 @@ Created by running `./build-support/bin/contributors.sh`.
 + Yuhan GUO
 + Yujie Chen
 + billybecker
++ hephex
 + Ólafur Páll Geirsson

src/python/pants/VERSION

@@ -1 +1 @@
-2.5.0.dev3
+2.5.0rc0

src/python/pants/notes/2.5.x.md

@@ -2,6 +2,52 @@
 
 See https://www.pantsbuild.org/v2.5/docs/release-notes-2-5 for an overview of the changes in this release series.
 
+## 2.5.0rc0 (May 04, 2021)
+
+### New Features
+
+* Allow skipping linters/formatters/typecheckers by target ([#12008](https://github.com/pantsbuild/pants/pull/12008))
+
+* Add `runtime_package_dependencies` field to `shunit2_tests` ([#11997](https://github.com/pantsbuild/pants/pull/11997))
+
+* Tell isort to use the config file at `[isort].config` when safe to do so ([#11994](https://github.com/pantsbuild/pants/pull/11994))
+
+* Support `[coverage.py]` config files using `pyproject.toml`, `setup.cfg`, and `tox.ini` ([#11993](https://github.com/pantsbuild/pants/pull/11993))
+
+* Check parent directories too for config files for tools Pants runs ([#11992](https://github.com/pantsbuild/pants/pull/11992))
+
+### User API Changes
+
+* Make python-setup resolve_all_constraints a bool. ([#11985](https://github.com/pantsbuild/pants/pull/11985))
+
+* Add back `interpreter_constraints` field to `python_awslambda` ([#11982](https://github.com/pantsbuild/pants/pull/11982))
+
+* Add back `interpreter_constraints` field to `pex_binary` ([#11977](https://github.com/pantsbuild/pants/pull/11977))
+
+### Plugin API Changes
+
+* Add mechanism for targets to opt out of field sets ([#12002](https://github.com/pantsbuild/pants/pull/12002))
+
+* Add `TriBoolField` field template ([#12004](https://github.com/pantsbuild/pants/pull/12004))
+
+* Discover config files automatically for tools Pants runs ([#11995](https://github.com/pantsbuild/pants/pull/11995))
+
+* Don't require a kwarg for `Target` and `Field` constructors ([#11984](https://github.com/pantsbuild/pants/pull/11984))
+
+### Performance
+
+* Don't parse string imports if not enabled ([#11975](https://github.com/pantsbuild/pants/pull/11975))
+
+### Documentation
+
+* Don't include file name in deprecation warnings ([#12007](https://github.com/pantsbuild/pants/pull/12007))
+
+* Stop falling back to docstring for help messages for `Target` and `Field` ([#12003](https://github.com/pantsbuild/pants/pull/12003))
+
+* Suggest using `./pants tailor` when target doesn't exist for a file argument ([#11996](https://github.com/pantsbuild/pants/pull/11996))
+
+* Make remote cache warning less chatty for missing files ([#11976](https://github.com/pantsbuild/pants/pull/11976))
+
 ## 2.5.0.dev3 (Apr 23, 2021)
 
 ### User API Changes