Bump version to 0.3.4 and update README and CHANGELOG

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: wilsonfreitas

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## [0.3.4] - 2026-02-25
+- Replaced `requests` with `httpx` as the sole HTTP client across all modules
+- Added custom exceptions: `BCBError`, `BCBAPIError`, `CurrencyNotFoundError`, `SGSError`, `ODataError`
+- Added full type annotations with `mypy --strict` compliance
+- Added `DATE_COLUMNS` class attribute to `BaseODataAPI` for configurable date column detection
+- Renamed internal `CACHE` to `_CACHE` in `currency` module; added `currency.clear_cache()`
+- Overhauled test suite with mocked HTTP unit tests and a separate `tests/integration/` layer
+- Added CI/CD workflows: test matrix (Python 3.10–3.12), lint (black + mypy), Sphinx docs build
+- Fixed Sphinx docs build: updated `taxajuros` example to match BCB API rename of `'Cheque especial - Pré-fixado'` → `'Cheque especial - Prefixado'`
+
 ## [0.3.3] - 2025-04-21
 - Improved error handling in SGS API
 - Added type hints to the bcb.sgs and sgs.currency modules

README.md

@@ -5,6 +5,8 @@ da API de dados abertos do [Banco Central do Brasil](https://www.bcb.gov.br).
 
 [![Downloads](https://img.shields.io/pypi/dm/python-bcb.svg)](https://pypi.python.org/pypi/python-bcb/)
 [![image](https://img.shields.io/pypi/v/python-bcb.svg?color=green)](https://pypi.python.org/pypi/python-bcb/)
+![Test workflow](https://github.com/wilsonfreitas/python-bcb/actions/workflows/test.yml/badge.svg)
+![Lint workflow](https://github.com/wilsonfreitas/python-bcb/actions/workflows/lint.yml/badge.svg)
 ![Sphinx workflow](https://github.com/wilsonfreitas/python-bcb/actions/workflows/sphinx.yml/badge.svg)
 
 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "python-bcb"
-version = "0.3.3"
+version = "0.3.4"
 description = ""
 authors = ["wilsonfreitas <wilson.freitas@gmail.com>"]
 readme = "README.md"