diff --git a/cement/ext/ext_configparser.py b/cement/ext/ext_configparser.py
index 587e89e3..0aa8f0d4 100644
--- a/cement/ext/ext_configparser.py
+++ b/cement/ext/ext_configparser.py
@@ -152,12 +152,12 @@ class ConfigParserConfigHandler(config.ConfigHandler, RawConfigParser):
         env_var = re.sub('[^0-9a-zA-Z]+', '_', env_var)
         return env_var
 
-    def get(self, section, key):
+    def get(self, section, key, **kwargs):
         env_var = self._get_env_var(section, key)
         if env_var in os.environ.keys():
             return os.environ[env_var]
         else:
-            return RawConfigParser.get(self, section, key)
+            return RawConfigParser.get(self, section, key, **kwargs)
 
     def has_section(self, section):
         return RawConfigParser.has_section(self, section)

Configparser 'getboolean' exception
**System Information**

- Cement Version: 3.0.0
- Python Version: 3.6.8
- Operating System and Version: Linux Mint 19.1

**Steps to Reproduce (Bugs Only)**

- Create a boolean setting: configparser only supports string values so this has to be a string representation of a boolean. [According to configparser](https://docs.python.org/3/library/configparser.html#supported-datatypes), this includes 

  > 'yes'/'no', 'on'/'off', 'true'/'false' and '1'/'0'

- Access this value using the `getboolean` method recommended by configparser. This should automatically convert the string value to a bool. Example usage:
`if self.app.config['hydra'].getboolean('validator_metrics'):`
- Exception:
  ```Traceback (most recent call last):
  File "/home/adam/.pyenv/versions/hydra/bin/hydra", line 11, in <module>
    load_entry_point('hydra', 'console_scripts', 'hydra')()
  File "/home/adam/PycharmProjects/hydra/hydra/main.py", line 152, in main
    app.run()
  File "/home/adam/.pyenv/versions/hydra/lib/python3.6/site-packages/cement-3.0.0-py3.6.egg/cement/core/foundation.py", line 916, in run
    return_val = self.controller._dispatch()
  File "/home/adam/.pyenv/versions/hydra/lib/python3.6/site-packages/cement-3.0.0-py3.6.egg/cement/ext/ext_argparse.py", line 806, in _dispatch
    return func()
  File "/home/adam/PycharmProjects/hydra/hydra/controllers/client.py", line 621, in enable_metrics
    self.app.client.configure_metrics()
  File "/home/adam/PycharmProjects/hydra/hydra/helpers/client.py", line 275, in configure_metrics
    if self.app.config['hydra'].getboolean('validator_metrics'):
  File "/home/adam/.pyenv/versions/3.6.8/lib/python3.6/configparser.py", line 1283, in get
    fallback=fallback, **kwargs)
  File "/home/adam/.pyenv/versions/3.6.8/lib/python3.6/configparser.py", line 829, in getboolean
    raw=raw, vars=vars, fallback=fallback, **kwargs)
  File "/home/adam/.pyenv/versions/3.6.8/lib/python3.6/configparser.py", line 809, in _get_conv
    **kwargs)
  File "/home/adam/.pyenv/versions/3.6.8/lib/python3.6/configparser.py", line 803, in _get
    return conv(self.get(section, option, **kwargs))
  TypeError: get() got an unexpected keyword argument 'raw'
  ```

I am thinking this is due to the fact that cement does not pass kwargs to configparser's wrapped `get` method. I am going to attempt making a PR to address this issue.

diff --git a/tests/ext/test_ext_configparser.py b/tests/ext/test_ext_configparser.py
index b0ed7558..e5bf5fac 100644
--- a/tests/ext/test_ext_configparser.py
+++ b/tests/ext/test_ext_configparser.py
@@ -54,3 +54,15 @@ def test_env_var_override():
         assert app.config.get('dummy', 'foo') == 'dummy-not-bar'
         section_dict = app.config.get_section_dict('dummy')
         assert section_dict['foo'] == 'dummy-not-bar'
+
+
+def test_get_boolean():
+    with TestApp(config_section='testapp') as app:
+        app.config.set('testapp', 'foobool', 'true')
+        assert app.config['testapp'].getboolean('foobool') is True
+
+        app.config.set('testapp', 'foobool', 'no')
+        assert app.config['testapp'].getboolean('foobool') is False
+
+        os.environ['TESTAPP_FOOBOOL'] = '1'
+        assert app.config['testapp'].getboolean('foobool') is True

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest
apt-get update apt-get install -y gcc
3.6
requirements-dev.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
alabaster==0.7.13
async-timeout==4.0.2
attrs==22.2.0
autopep8==2.0.4
Babel==2.11.0
bleach==4.1.0
-e git+https://github.com/datafolklabs/cement.git@775fc4d933a4674f131418671c87f79944778e13#egg=cement
certifi==2021.5.30
cffi==1.15.1
charset-normalizer==2.0.12
colorama==0.4.5
colorlog==6.9.0
coverage==6.2
cryptography==40.0.2
docutils==0.18.1
flake8==2.5.5
guzzle-sphinx-theme==0.7.11
idna==3.10
imagesize==1.4.1
importlib-metadata==4.8.3
importlib-resources==5.4.0
iniconfig==1.1.1
jeepney==0.7.1
Jinja2==3.0.3
keyring==23.4.1
MarkupSafe==2.0.1
mccabe==0.4.0
mock==5.2.0
packaging==21.3
pep8==1.7.1
pkginfo==1.10.0
pluggy==1.0.0
pockets==0.9.1
py==1.11.0
pycodestyle==2.10.0
pycparser==2.21
pyflakes==1.0.0
Pygments==2.14.0
pylibmc==1.6.3
pyparsing==3.1.4
pystache==0.6.4
pytest==7.0.1
pytest-cov==4.0.0
pytz==2025.2
PyYAML==6.0.1
readme-renderer==34.0
redis==4.3.6
requests==2.27.1
requests-toolbelt==1.0.0
rfc3986==1.5.0
SecretStorage==3.3.3
six==1.17.0
snowballstemmer==2.2.0
Sphinx==5.3.0
sphinx-rtd-theme==2.0.0
sphinxcontrib-applehelp==1.0.2
sphinxcontrib-devhelp==1.0.2
sphinxcontrib-htmlhelp==2.0.0
sphinxcontrib-jquery==4.1
sphinxcontrib-jsmath==1.0.1
sphinxcontrib-napoleon==0.7
sphinxcontrib-qthelp==1.0.3
sphinxcontrib-serializinghtml==1.1.5
tabulate==0.8.10
tomli==1.2.3
tqdm==4.64.1
twine==3.8.0
typing_extensions==4.1.1
urllib3==1.26.20
watchdog==2.3.1
webencodings==0.5.1
zipp==3.6.0

name: cement
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2021.5.30=py36h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.3=he6710b0_2
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=21.2.2=py36h06a4308_0
  - python=3.6.13=h12debd9_1
  - readline=8.2=h5eee18b_0
  - setuptools=58.0.4=py36h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.37.1=pyhd3eb1b0_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - alabaster==0.7.13
      - async-timeout==4.0.2
      - attrs==22.2.0
      - autopep8==2.0.4
      - babel==2.11.0
      - bleach==4.1.0
      - cffi==1.15.1
      - charset-normalizer==2.0.12
      - colorama==0.4.5
      - colorlog==6.9.0
      - coverage==6.2
      - cryptography==40.0.2
      - docutils==0.18.1
      - flake8==2.5.5
      - guzzle-sphinx-theme==0.7.11
      - idna==3.10
      - imagesize==1.4.1
      - importlib-metadata==4.8.3
      - importlib-resources==5.4.0
      - iniconfig==1.1.1
      - jeepney==0.7.1
      - jinja2==3.0.3
      - keyring==23.4.1
      - markupsafe==2.0.1
      - mccabe==0.4.0
      - mock==5.2.0
      - packaging==21.3
      - pep8==1.7.1
      - pkginfo==1.10.0
      - pluggy==1.0.0
      - pockets==0.9.1
      - py==1.11.0
      - pycodestyle==2.10.0
      - pycparser==2.21
      - pyflakes==1.0.0
      - pygments==2.14.0
      - pylibmc==1.6.3
      - pyparsing==3.1.4
      - pystache==0.6.4
      - pytest==7.0.1
      - pytest-cov==4.0.0
      - pytz==2025.2
      - pyyaml==6.0.1
      - readme-renderer==34.0
      - redis==4.3.6
      - requests==2.27.1
      - requests-toolbelt==1.0.0
      - rfc3986==1.5.0
      - secretstorage==3.3.3
      - six==1.17.0
      - snowballstemmer==2.2.0
      - sphinx==5.3.0
      - sphinx-rtd-theme==2.0.0
      - sphinxcontrib-applehelp==1.0.2
      - sphinxcontrib-devhelp==1.0.2
      - sphinxcontrib-htmlhelp==2.0.0
      - sphinxcontrib-jquery==4.1
      - sphinxcontrib-jsmath==1.0.1
      - sphinxcontrib-napoleon==0.7
      - sphinxcontrib-qthelp==1.0.3
      - sphinxcontrib-serializinghtml==1.1.5
      - tabulate==0.8.10
      - tomli==1.2.3
      - tqdm==4.64.1
      - twine==3.8.0
      - typing-extensions==4.1.1
      - urllib3==1.26.20
      - watchdog==2.3.1
      - webencodings==0.5.1
      - zipp==3.6.0
prefix: /opt/conda/envs/cement

tests/ext/test_ext_configparser.py::test_get_boolean
tests/ext/test_ext_configparser.py::TestConfigParserConfigHandler::test_subclassing tests/ext/test_ext_configparser.py::test_get_dict tests/ext/test_ext_configparser.py::test_env_var_override
cement/ext/ext_configparser.py
cement/ext/ext_configparser.py