Prepare the 2.4.0.dev0 release. (#11613)

CONTRIBUTORS.md

@@ -124,6 +124,7 @@ Created by running `./build-support/bin/contributors.sh`.
 + Lei Wang
 + Leo Kim
 + Lex Spoon
++ Liam Wilson
 + Luc Cary
 + Luca Clementi
 + Lukasz Jastrzebski

pants.toml

@@ -124,6 +124,7 @@ release_notes = """
   '2.1.x': 'src/python/pants/notes/2.1.x.rst',
   '2.2.x': 'src/python/pants/notes/2.2.x.md',
   '2.3.x': 'src/python/pants/notes/2.3.x.md',
+  '2.4.x': 'src/python/pants/notes/2.4.x.md',
 }
 """
 

src/python/pants/VERSION

@@ -1 +1 @@
-2.3.0rc0
+2.4.0.dev0

src/python/pants/notes/2.4.x.md

@@ -0,0 +1,34 @@
+# 2.4.x Stable Releases
+
+See https://www.pantsbuild.org/v2.4/docs/release-notes-2-4 for an overview of the changes in this release series.
+
+## 2.4.0.dev0 (Feb 27, 2021)
+
+### New Features
+
+* Add `--stats-log` to log metrics at end of run ([#11599](https://github.com/pantsbuild/pants/pull/11599))
+
+### User API Changes
+
+* Deprecate --python-setup-resolver-version option. ([#11611](https://github.com/pantsbuild/pants/pull/11611))
+
+* Remove deprecated --remote-store options. ([#11609](https://github.com/pantsbuild/pants/pull/11609))
+
+* Remove deprecated --process-execution-speculation options. ([#11610](https://github.com/pantsbuild/pants/pull/11610))
+
+* Remove deprecated `--remote-execution-server` and `--remote-store-server` options ([#11603](https://github.com/pantsbuild/pants/pull/11603))
+
+* Deprecate unused `--process-execution-local-enable-nailgun` ([#11600](https://github.com/pantsbuild/pants/pull/11600))
+
+### Bug fixes
+
+* Upgrade Pex to 2.1.32 to fix venv script shebangs being too long for some Linux systems. ([#11604](https://github.com/pantsbuild/pants/pull/11604))
+
+### Performance
+
+* Release the Pants PEX in `--venv` mode. ([#11591](https://github.com/pantsbuild/pants/pull/11591))
+
+### Documentation
+
+* Less chatty plugin resolution logging ([#11593](https://github.com/pantsbuild/pants/pull/11593))
+