From master to main

Adapted to the default branch renaming from `master` to `main` [1] like
documented in detail in the main task issue
svengreb/styleguide-git#11 [2].

[1]: https://github.com/github/renaming
[2]: svengreb/styleguide-git#11

Subtask of svengreb/styleguide-git#11
GH-23

Author: svengreb

CHANGELOG.md renamed to changelog.md

@@ -1,4 +1,4 @@
-<p align="center"><img src="https://cdn.rawgit.com/arcticicestudio/nord-alacritty/master/assets/nord-alacritty-banner.svg"/></p>
+<p align="center"><img src="https://cdn.rawgit.com/arcticicestudio/nord-alacritty/main/assets/nord-alacritty-banner.svg"/></p>
 
 <p align="center"><a href="https://github.com/arcticicestudio/nord-alacritty/releases/latest" target="_blank"><img src="https://img.shields.io/github/release/arcticicestudio/nord-alacritty.svg?style=flat-square&label=Release&logo=github&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/></a> <a href="https://github.com/arcticicestudio/nord/releases/tag/v0.2.0" target="_blank"><img src="https://img.shields.io/badge/Nord-v0.2.0-88C0D0.svg?style=flat-square&label=Nord&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/></a></p>
 
@@ -10,8 +10,8 @@
 
 ## Features
 
-Implemented the main color scheme file [`nord.yml`](https://github.com/arcticicestudio/nord-alacritty/blob/master/src/nord.yml). (@arcticicestudio, #1 in PR #2, 6e457657)
+Implemented the main color scheme file [`nord.yml`](https://github.com/arcticicestudio/nord-alacritty/blob/main/src/nord.yml). (@arcticicestudio, #1 in PR #2, 6e457657)
 
-Detailed information about features and install instructions can be found in the [README](https://github.com/arcticicestudio/nord-alacritty/blob/master/readme.md#installation) and in the [project wiki](https://github.com/arcticicestudio/nord-alacritty/wiki).
+Detailed information about features and install instructions can be found in the [README](https://github.com/arcticicestudio/nord-alacritty/blob/main/readme.md#installation) and in the [project wiki](https://github.com/arcticicestudio/nord-alacritty/wiki).
 
-<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/master/assets/scrot-hero.png"/><br><strong>htop</strong><br><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/master/assets/scrot-htop.png"/></p>
+<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/main/assets/scrot-hero.png"/><br><strong>htop</strong><br><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/main/assets/scrot-htop.png"/></p>

README.md renamed to readme.md

@@ -1,4 +1,4 @@
-<p align="center"><img src="https://cdn.rawgit.com/arcticicestudio/nord-alacritty/master/assets/nord-alacritty-banner.svg"/></p>
+<p align="center"><img src="https://cdn.rawgit.com/arcticicestudio/nord-alacritty/main/assets/nord-alacritty-banner.svg"/></p>
 
 <p align="center"><a href="https://github.com/arcticicestudio/nord-alacritty/releases/latest" target="_blank"><img src="https://img.shields.io/github/release/arcticicestudio/nord-alacritty.svg?style=flat-square&label=Release&logo=github&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/></a> <a href="https://github.com/arcticicestudio/nord-alacritty/blob/main/changelog.md" target="_blank"><img src="https://img.shields.io/github/release/arcticicestudio/nord-alacritty.svg?style=flat-square&label=Changelog&logo=github&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/></a></p>
 
@@ -11,7 +11,7 @@ Based on the <a href="https://github.com/arcticicestudio/nord">Nord</a> color pa
 
 ---
 
-<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/master/assets/scrot-hero.png"/><blockquote>Font: <a href="https://adobe-fonts.github.io/source-code-pro">Source Code Pro</a> 12px.</blockquote></p>
+<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/main/assets/scrot-hero.png"/><blockquote>Font: <a href="https://adobe-fonts.github.io/source-code-pro">Source Code Pro</a> 12px.</blockquote></p>
 
 ## Getting started
 
@@ -25,17 +25,17 @@ If `live_config_reload` is set to `true` the colors are applied immediately, oth
 
 ## Screenshots
 
-<p align="center"><strong>htop</strong><br><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/master/assets/scrot-htop.png"/></p>
+<p align="center"><strong>htop</strong><br><img src="https://raw.githubusercontent.com/arcticicestudio/nord-alacritty/main/assets/scrot-htop.png"/></p>
 
 ### Contribution
 
 Please report issues/bugs, feature requests and suggestions for improvements to the [issue tracker](https://github.com/arcticicestudio/nord-alacritty/issues).
 
-<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/master/assets/images/nord/repository-footer-separator.svg?sanitize=true" /></p>
+<p align="center"><img src="https://raw.githubusercontent.com/arcticicestudio/nord-docs/main/assets/images/nord/repository-footer-separator.svg?sanitize=true" /></p>
 
 <p align="center">Copyright &copy; 2017-present Arctic Ice Studio</p>
 
-<p align="center"><a href="https://github.com/arcticicestudio/nord-alacritty/blob/master/LICENSE.md"><img src="https://img.shields.io/badge/License-MIT-5E81AC.svg?style=flat-square"/></a> <a href="https://creativecommons.org/licenses/by-sa/4.0"><img src="https://img.shields.io/badge/License-CC_BY--SA_4.0-5E81AC.svg?style=flat-square"/></a></p>
+<p align="center"><a href="https://github.com/arcticicestudio/nord-alacritty/blob/main/LICENSE.md"><img src="https://img.shields.io/badge/License-MIT-5E81AC.svg?style=flat-square"/></a> <a href="https://creativecommons.org/licenses/by-sa/4.0"><img src="https://img.shields.io/badge/License-CC_BY--SA_4.0-5E81AC.svg?style=flat-square"/></a></p>
 
 [alacritty-gh-config]: https://github.com/alacritty/alacritty#configuration
-[nord-yml]: https://github.com/arcticicestudio/nord-alacritty/blob/master/src/nord.yml
+[nord-yml]: https://github.com/arcticicestudio/nord-alacritty/blob/main/src/nord.yml