docs: adding release-please docs

Author: orest-tokovenko-block

CONTRIBUTORS.md

@@ -78,6 +78,19 @@ Re-record cassettes when:
 - An API response schema changes (use `just test-vcr-rewrite tests/test_main.py::test_affected_test`)
 - A fixture changes the request payload (field values, resource names, etc.)
 
+## Releases
+
+Releases are automated via [release-please](https://github.com/googleapis/release-please). PR titles must use [Conventional Commits](https://www.conventionalcommits.org/) prefixes, and PRs must be squash-merged so the title becomes the commit message.
+
+| Prefix | Version bump | Example |
+|---|---|---|
+| `fix:` | Patch (1.1.1 -> 1.1.2) | `fix: handle null chart_settings in cost reports` |
+| `feat:` | Minor (1.1.1 -> 1.2.0) | `feat: add dashboard endpoints` |
+| `feat!:` | Major (1.1.1 -> 2.0.0) | `feat!: rename VantageSDK to VantageClient` |
+| `chore:`, `docs:`, `ci:` | No release | `chore: update dev dependencies` |
+
+When commits land on `main`, release-please opens (or updates) a Release PR that bumps the version in `pyproject.toml` and updates `CHANGELOG.md`. Merging that Release PR triggers the publish to PyPI. Do not manually edit the version in `pyproject.toml`.
+
 ## Regenerating Models
 
 `vantage_sdk/models/gen_models/` is generated using the `datamodel-codegen` tool. All codegen configuration lives in `pyproject.toml` under `[tool.datamodel-codegen]`.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "uv_build"
 
 [project]
 name = "client-for-vantage"
-version = "1.1.2"
+version = "1.1.1"
 description = "An SDK for interacting with the Vantage API, attempts to maintain parity with the API, provides type safety via codegen Pydantic classes and manages pagination"
 readme = "README.md"
 requires-python = ">=3.10,<3.13"
@@ -163,4 +163,4 @@ quote-style = "double"
 
 [tool.pyproject-fmt]
 column_width = 120
-indent = 4
+indent = 4