Fixups after renaming master branch to main. (#36)

.github/workflows/unittests.yaml

@@ -35,7 +35,7 @@ jobs:
           path: ~/.sbt
           key: ${{ runner.os }}-sbt-${{ hashFiles('**/build.properties') }}
   release:
-    if: github.repository == 'fulcrumgenomics/sopt' && github.ref == 'refs/heads/master'
+    if: github.repository == 'fulcrumgenomics/sopt' && github.ref == 'refs/heads/main'
 
     needs: test
     runs-on: ubuntu-latest

README.md

@@ -1,9 +1,9 @@
 [![Build Status](https://github.com/fulcrumgenomics/sopt/workflows/unit%20tests/badge.svg)](https://github.com/fulcrumgenomics/sopt/actions?query=workflow%3A%22unit+tests%22)
-[![Coverage Status](https://codecov.io/github/fulcrumgenomics/sopt/coverage.svg?branch=master)](https://codecov.io/github/fulcrumgenomics/sopt?branch=master)
+[![Coverage Status](https://codecov.io/github/fulcrumgenomics/sopt/coverage.svg?branch=main)](https://codecov.io/github/fulcrumgenomics/sopt?branch=main)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/73e4bc6a95d045c58685347e74b6b02e)](https://www.codacy.com/gh/fulcrumgenomics/sopt/dashboard?utm_source=github.com&utm_medium=referral&utm_content=fulcrumgenomics/sopt&utm_campaign=Badge_Grade)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.fulcrumgenomics/sopt_2.12/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.fulcrumgenomics/sopt_2.12)
 [![Javadocs](http://javadoc.io/badge/com.fulcrumgenomics/sopt_2.12.svg)](http://javadoc.io/doc/com.fulcrumgenomics/sopt_2.12)
-[![License](http://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/fulcrumgenomics/sopt/blob/master/LICENSE)
+[![License](http://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/fulcrumgenomics/sopt/blob/main/LICENSE)
 [![Language](http://img.shields.io/badge/language-scala-brightgreen.svg)](http://www.scala-lang.org/)
 
 # sopt - Scala Option Parsing Library