diff --git a/rna/__init__.py b/rna/__init__.py
index fd50dd5a1fa0bb728cb94481f83fb7c7c3e3dc11..342c1540019337d694325fe149ec67ac8a2b1324 100644
--- a/rna/__init__.py
+++ b/rna/__init__.py
@@ -2,7 +2,7 @@
 
 __author__ = """Daniel Böckenhoff"""
 __email__ = 'dboe@ipp.mpg.de'
-__version__ = '0.2.2'
+__version__ = '0.2.3'
 
 from . import plotting
 from . import log  # NOQA
diff --git a/setup.cfg b/setup.cfg
index 1e04eaffa29adbd8a2622b2adfb0bb588a895f37..9290bdc6f725bd488dd57f8ac9aac651e315f011 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,19 +1,23 @@
+[bumpversion]
+current_version = 0.2.3
+commit = True
+tag = True
+
 [metadata]
 name = rna
 version = attr: rna.__version__
 url = https://gitlab.mpcdf.mpg.de/dboe/rna
 author = Daniel Böckenhoff
 author_email = dboe@ipp.mpg.de
-# find the full list of possible classifiers at https://pypi.org/classifiers/
 classifiers = 
-    Development Status :: 3 - Alpha
-    License :: OSI Approved :: MIT License
-    Programming Language :: Python
-    Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.5
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
+	Development Status :: 3 - Alpha
+	License :: OSI Approved :: MIT License
+	Programming Language :: Python
+	Programming Language :: Python :: 3
+	Programming Language :: Python :: 3.5
+	Programming Language :: Python :: 3.6
+	Programming Language :: Python :: 3.7
+	Programming Language :: Python :: 3.8
 license = MIT License
 license_files = LICENSE.rst
 description = Basic and essential code building blocks of all pythons
@@ -21,47 +25,42 @@ long_description = file: README.rst, LICENSE.rst
 long_description_content_type = text/x-rst
 keywords = plotting, matplotlib, pyqtgraph, backend, logging, path, argparse
 install_requires = 
-    numpy
-    matplotlib
-    pathlib2;python_version<"3.0"
-    pathlib;python_version>="3.0"
-project_urls =
-    Documentation = https://gitlab.mpcdf.mpg.de/dboe/rna
-    Source = https://gitlab.mpcdf.mpg.de/dboe/rna
-tests_require =
-    doctest
-    unittest
+	numpy
+	matplotlib
+	pathlib2;python_version<"3.0"
+	pathlib;python_version>="3.0"
+project_urls = 
+	Documentation = https://gitlab.mpcdf.mpg.de/dboe/rna
+	Source = https://gitlab.mpcdf.mpg.de/dboe/rna
+tests_require = 
+	doctest
+	unittest
 python_requires = >=3.0
 
 [options.extras_require]
-all =
-    %(dev)s
-    %(test)s
-dev =
-    twine  # for publishing
-    %(test)s
-    sphinx  # for documentation
-test =
-    flake8
-    pytest
-    pytest-cov
-    coverage
-    pytest-shutil
-    pytest-virtualenv
-    pytest-fixture-config
-    pytest-xdist
-
-    tfields
-    %(pyqtgraph)s
-pyqtgraph =
-    pyqt5
-    pyopengl
-    pyqtgraph
-
-[bumpversion]
-current_version = '0.2.2'
-commit = True
-tag = True
+all = 
+	%(dev)s
+	%(test)s
+dev = 
+	twine  # for publishing
+	%(test)s
+	sphinx  # for documentation
+test = 
+	flake8
+	pytest
+	pytest-cov
+	coverage
+	pytest-shutil
+	pytest-virtualenv
+	pytest-fixture-config
+	pytest-xdist
+	
+	tfields
+	%(pyqtgraph)s
+pyqtgraph = 
+	pyqt5
+	pyopengl
+	pyqtgraph
 
 [bumpversion:file:rna/__init__.py]
 search = __version__ = '{current_version}'
@@ -72,19 +71,14 @@ universal = 1
 
 [coverage:report]
 show_missing = true
-exclude_lines =
-    pragma: no cover
-    if False
-    # @abc.abstractmethod
-    # @abc.abstractproperty
-    # raise NotImplementedError
-    # return NotImplemented
-    # except ImportError
+exclude_lines = 
+	pragma: no cover
+	if False
 
 [flake8]
 max-line-length = 99
 doctests = True
-exclude =  .git, .eggs, __pycache__, tests/, docs/, dist/, builds/,
+exclude = .git, .eggs, __pycache__, tests/, docs/, dist/, builds/,
 
 [build_sphinx]
 builder = html,man
@@ -98,26 +92,26 @@ addopts = --doctest-modules --ignore=builds
 [tox:tox]
 minversion = 3.7
 skip_missing_interpreters = true
-envlist =
-    flake8
-    py{35,36,37,38}-tox{312,315,latest}
+envlist = 
+	flake8
+	py{35,36,37,38}-tox{312,315,latest}
 recreate = true
 
 [gh-actions]
-python =
-    3.5: py35
-    3.6: py36
-    3.7: py37
-    3.8: py38, flake8
+python = 
+	3.5: py35
+	3.6: py36
+	3.7: py37
+	3.8: py38, flake8
 
 [testenv]
 description = run test suite under {basepython}
-deps =
-    tox312: tox>=3.12,<3.13
-    tox315: tox>=3.15,<3.16
+deps = 
+	tox312: tox>=3.12,<3.13
+	tox315: tox>=3.15,<3.16
 extras = testing
-commands =
-    pytest --cov={[metadata]name}
+commands = 
+	pytest --cov={[metadata]name}
 
 [testenv:flake8]
 commands = flake8 {[metadata]name}/ tests/