Merge branch 'main' into s-cate

Author: SvenKlaassen

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,5 @@
 Thanks for contributing to DoubleML.
-Before submitting a PR, please take a look at our [contribution guidelines](https://github.com/DoubleML/doubleml-for-py/blob/master/CONTRIBUTING.md).
+Before submitting a PR, please take a look at our [contribution guidelines](https://github.com/DoubleML/doubleml-for-py/blob/main/CONTRIBUTING.md).
 Additionally, please fill out the PR checklist below.
 
 ### Description
@@ -14,7 +14,7 @@ Here you can add further comments.
 You can also delete this section, if it is not necessary.
 
 ### PR Checklist
-Please fill out this PR checklist (see our [contributing guidelines](https://github.com/DoubleML/doubleml-for-py/blob/master/CONTRIBUTING.md#checklist-for-pull-requests-pr) for details).
+Please fill out this PR checklist (see our [contributing guidelines](https://github.com/DoubleML/doubleml-for-py/blob/main/CONTRIBUTING.md#checklist-for-pull-requests-pr) for details).
 
 - [ ] The title of the pull request summarizes the changes made.
 - [ ] The PR contains a detailed description of all changes and additions.

.github/workflows/pytest.yml

@@ -5,10 +5,10 @@ name: build
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
   schedule:
     - cron: "0 9 * * 1,3,5"
   workflow_dispatch:

CONTRIBUTING.md

@@ -1,9 +1,9 @@
-# DoubleML - Contributing Guidelines <a href="https://docs.doubleml.org"><img src="https://raw.githubusercontent.com/DoubleML/doubleml-for-py/master/doc/logo.png" align="right" width = "120" /></a>
+# DoubleML - Contributing Guidelines <a href="https://docs.doubleml.org"><img src="https://raw.githubusercontent.com/DoubleML/doubleml-for-py/main/doc/logo.png" align="right" width = "120" /></a>
 
 DoubleML is a community effort.
 Everyone is welcome to contribute.
 All contributors should adhere to this contributing guidelines
-and our [code of conduct](https://github.com/DoubleML/doubleml-for-py/blob/master/CODE_OF_CONDUCT.md).
+and our [code of conduct](https://github.com/DoubleML/doubleml-for-py/blob/main/CODE_OF_CONDUCT.md).
 The contributing guidelines are particularly helpful to get started for your first contribution.
 
 ## Submit a Bug Report :bug:
@@ -76,7 +76,7 @@ $ git remote add upstream https://github.com/DoubleML/doubleml-for-py.git
 This allows you to easily keep your repository in synch via
 ```bash
 $ git fetch upstream
-$ git merge upstream/master
+$ git merge upstream/main
 ```
 
 5. Install the **development dependencies** via
@@ -112,7 +112,7 @@ When opening the PR you will be guided with a checklist.
 - [x] **References** to related issues or PRs are added.
 
 - [x] The code passes **all (unit) tests** (see
-[below](https://github.com/DoubleML/doubleml-for-py/blob/master/CONTRIBUTING.md#unit-test-and-test-coverage)
+[below](https://github.com/DoubleML/doubleml-for-py/blob/main/CONTRIBUTING.md#unit-test-and-test-coverage)
 for details).
 To check, please run
 ```bash
@@ -125,7 +125,7 @@ $ pytest .
 - [x] Check whether your changes adhere to the **PEP8 standards**.
 For the check you can use the following code
 ```bash
-$ git diff upstream/master -u -- "*.py" | flake8 --diff --max-line-length=127
+$ git diff upstream/main -u -- "*.py" | flake8 --diff --max-line-length=127
 ```
 
 If your PR is still **work in progress**, please consider marking it a **draft PR**
@@ -160,7 +160,7 @@ new model class (e.g. regressions or classifications).
 Furthermore, the **score components for the Neyman orthogonal score function need to be implemented**.
 All other functionality is automatically available via inheritance from the abstract base class.
 A **template for new model classes** is available
-[here](https://github.com/DoubleML/doubleml-docs/blob/master/model_templates/double_ml_model_template.py).
+[here](https://github.com/DoubleML/doubleml-docs/blob/main/model_templates/double_ml_model_template.py).
 
 ## Contribute Documentation :books:
 The **documentation** of DoubleML is generated with **sphinx** and hosted at

README.md

@@ -1,9 +1,9 @@
-# DoubleML - Double Machine Learning in Python <a href="https://docs.doubleml.org"><img src="https://raw.githubusercontent.com/DoubleML/doubleml-for-py/master/doc/logo.png" align="right" width = "120" /></a>
+# DoubleML - Double Machine Learning in Python <a href="https://docs.doubleml.org"><img src="https://raw.githubusercontent.com/DoubleML/doubleml-for-py/main/doc/logo.png" align="right" width = "120" /></a>
 
 [![build](https://github.com/DoubleML/doubleml-for-py/workflows/build/badge.svg)](https://github.com/DoubleML/doubleml-for-py/actions?query=workflow%3Abuild)
 [![PyPI version](https://badge.fury.io/py/DoubleML.svg)](https://badge.fury.io/py/DoubleML)
 [![Conda Version](https://img.shields.io/conda/vn/conda-forge/doubleml.svg)](https://anaconda.org/conda-forge/doubleml)
-[![codecov](https://codecov.io/gh/DoubleML/doubleml-for-py/branch/master/graph/badge.svg?token=0BjlFPgdGk)](https://codecov.io/gh/DoubleML/doubleml-for-py)
+[![codecov](https://codecov.io/gh/DoubleML/doubleml-for-py/branch/main/graph/badge.svg?token=0BjlFPgdGk)](https://codecov.io/gh/DoubleML/doubleml-for-py)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/1c08ec7d782c451784293c996537de14)](https://www.codacy.com/gh/DoubleML/doubleml-for-py/dashboard?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=DoubleML/doubleml-for-py&amp;utm_campaign=Badge_Grade)
 [![Python version](https://img.shields.io/badge/python-3.6%20%7C%203.7%20%7C%203.8%20%7C%203.9%20%7C%203.10-blue)](https://www.python.org/)
 
@@ -56,7 +56,7 @@ It further can be readily extended with regards to
 - ... alternative resampling schemes,
 - ... 
 
-![An overview of the OOP structure of the DoubleML package is given in the graphic available at https://github.com/DoubleML/doubleml-for-py/blob/master/doc/oop.svg](https://raw.githubusercontent.com/DoubleML/doubleml-for-py/master/doc/oop.svg)
+![An overview of the OOP structure of the DoubleML package is given in the graphic available at https://github.com/DoubleML/doubleml-for-py/blob/main/doc/oop.svg](https://raw.githubusercontent.com/DoubleML/doubleml-for-py/main/doc/oop.svg)
 
 ## Installation
 
@@ -90,9 +90,9 @@ Detailed [installation instructions](https://docs.doubleml.org/stable/intro/inst
 DoubleML is a community effort.
 Everyone is welcome to contribute.
 To get started for your first contribution we recommend reading our
-[contributing guidelines](https://github.com/DoubleML/doubleml-for-py/blob/master/CONTRIBUTING.md)
+[contributing guidelines](https://github.com/DoubleML/doubleml-for-py/blob/main/CONTRIBUTING.md)
 and our
-[code of conduct](https://github.com/DoubleML/doubleml-for-py/blob/master/CODE_OF_CONDUCT.md).
+[code of conduct](https://github.com/DoubleML/doubleml-for-py/blob/main/CODE_OF_CONDUCT.md).
 
 ## Citation