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

Co-authored-by: Sven Greb <[email protected]>

Signed-off-by: Sven Greb <[email protected]>

Subtask of svengreb/styleguide-git#11
GH-136

Author: svengreb

changelog.md

@@ -262,23 +262,23 @@ _2017-03-25_
 
 ## Bug Fixes
 
-❯ Fixed the package documentation format to adhere to the [MELPA contribution standard](https://github.com/melpa/melpa/blob/master/CONTRIBUTING.md). (@svengreb, 8b835e60)
+❯ Fixed the package documentation format to adhere to the [MELPA contribution standard](https://github.com/melpa/melpa/blob/master/CONTRIBUTING.org). (@svengreb, 8b835e60)
 
 # 0.1.0
 
 _2017-03-25_
 
 ## Features
 
-Detailed information about [features](https://github.com/nordtheme/emacs/blob/master/readme.md#features), [supported packages](https://github.com/nordtheme/emacs/blob/master/readme.md#package-support) and install instructions can be found in the [README](https://github.com/nordtheme/emacs/blob/master/readme.md#installation).
+Detailed information about [features](https://github.com/nordtheme/emacs/blob/main/readme.md#features), [supported packages](https://github.com/nordtheme/emacs/blob/main/readme.md#package-support) and install instructions can be found in the [README](https://github.com/nordtheme/emacs/blob/main/readme.md#installation).
 
-❯ Implemented the main theme file [`nord-theme.el`](https://github.com/nordtheme/emacs/blob/master/nord-theme.el). (@svengreb, #1, e51f7593)
+❯ Implemented the main theme file [`nord-theme.el`](https://github.com/nordtheme/emacs/blob/main/nord-theme.el). (@svengreb, #1, e51f7593)
 
-<p align="center"><img src="https://raw.githubusercontent.com/nordtheme/emacs/master/assets/scrot-package-syntax-jdee.png"/></p>
+<p align="center"><img src="https://raw.githubusercontent.com/nordtheme/emacs/main/assets/scrot-package-syntax-jdee.png"/></p>
 
-<p align="center"><strong>Non-obtrusive bracket matching- and search marker.</strong><br><img src="https://raw.githubusercontent.com/nordtheme/emacs/master/assets/scrot-feature-bracket-matching.png"/><br><img src="https://raw.githubusercontent.com/nordtheme/emacs/master/assets/scrot-feature-search.gif"/></p>
+<p align="center"><strong>Non-obtrusive bracket matching- and search marker.</strong><br><img src="https://raw.githubusercontent.com/nordtheme/emacs/main/assets/scrot-feature-bracket-matching.png"/><br><img src="https://raw.githubusercontent.com/nordtheme/emacs/main/assets/scrot-feature-search.gif"/></p>
 
-<p align="center"><strong>Colors of selected code can still be easily recognized.</strong><br><img src="https://raw.githubusercontent.com/nordtheme/emacs/master/assets/scrcast-feature-selection.gif"/></p>
+<p align="center"><strong>Colors of selected code can still be easily recognized.</strong><br><img src="https://raw.githubusercontent.com/nordtheme/emacs/main/assets/scrcast-feature-selection.gif"/></p>
 
 ❯ Implemented support for multiple syntax packages:
 
@@ -319,7 +319,7 @@ _2017-03-25_
 </p>
 
 <p align="center">
-  <a href="https://github.com/nordtheme/emacs/blob/master/license" target="_blank">
+  <a href="https://github.com/nordtheme/emacs/blob/main/license" target="_blank">
     <img src="https://img.shields.io/static/v1.svg?style=flat-square&label=License&message=MIT&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/>
   </a>
   <a href="https://www.svengreb.de">

readme.md

@@ -14,7 +14,7 @@
   <a href="https://www.nordtheme.com/docs/ports/emacs" target="_blank">
     <img src="https://img.shields.io/github/release/nordtheme/emacs.svg?style=flat-square&label=Docs&colorA=4c566a&colorB=88c0d0&logo=data%3Aimage%2Fsvg%2Bxml%3Bbase64%2CPHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxNiIgaGVpZ2h0PSIxNiI%2BCiAgICA8cGF0aCBmaWxsPSIjZDhkZWU5IiBkPSJNMTMuNzQ2IDIuODEzYS42Ny42NyAwIDAgMC0uNTU5LS4xMzNMOCAzLjg0OGwtNS4xODgtMS4xOGEuNjY5LjY2OSAwIDAgMC0uNTcuMTMzLjY3Ny42NzcgMCAwIDAtLjI0Mi41MzF2OC4xMzNjLS4wMDguMzIuMjEuNTk4LjUyLjY2OGw1LjMzMiAxLjE5OWguMjk2bDUuMzMyLTEuMmEuNjY4LjY2OCAwIDAgMCAuNTItLjY2N1YzLjMzMmEuNjU5LjY1OSAwIDAgMC0uMjU0LS41MnpNMy4zMzIgNC4xNjhsNCAuODk4djYuNzY2bC00LS44OTh6bTkuMzM2IDYuNzY2bC00IC44OThWNS4wNjZsNC0uODk4em0wIDAiLz4KPC9zdmc%2BCg%3D%3D"/>
   </a>
-  <a href="https://github.com/nordtheme/emacs/blob/master/changelog.md" target="_blank">
+  <a href="https://github.com/nordtheme/emacs/blob/main/changelog.md" target="_blank">
     <img src="https://img.shields.io/github/release/nordtheme/emacs.svg?style=flat-square&label=Changelog&logo=github&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/>
   </a>
 </p>
@@ -156,7 +156,7 @@ The guide also includes information about [minimal, complete, and verifiable exa
 </p>
 
 <p align="center">
-  <a href="https://github.com/nordtheme/emacs/blob/master/license" target="_blank">
+  <a href="https://github.com/nordtheme/emacs/blob/main/license" target="_blank">
     <img src="https://img.shields.io/static/v1.svg?style=flat-square&label=License&message=MIT&logoColor=eceff4&colorA=4c566a&colorB=88c0d0"/>
   </a>
   <a href="https://www.svengreb.de">