Rename references to master branch

[jrfnl]

Proposed Changes

This PR is to be merged in conjunction with the branch rename to main as discussed in #160

Related Issues

Fixes #160

[Potherca]

I've checked the code, I didn't find other instances that the ones changed here.

The only other reference is https://github.com/PHPCSStandards/composer-installer/blob/master/tests/PHPCSVersions.php#L23 but if I understand correctly that is the branch on PHPCS not this project.

[jrfnl]

I've checked the code, I didn't find other instances that the ones changed here.

The only other reference is https://github.com/PHPCSStandards/composer-installer/blob/master/tests/PHPCSVersions.php#L23 but if I understand correctly that is the branch on PHPCS not this project.

100% correct. That's the PHPCS branch, not a reference to a branch in this project. Only thing we could do there, would maybe be to update line 19 to make it crystal clear that is a PHPCS branch reference:

composer-installer/tests/PHPCSVersions.php

Line 19 in fcae465

* Composer name for the development branch.

[Potherca]

I have renamed branch master to main. These changes have been merged into main via #201