Prepare for simplified branching model (#39)

Instead of following (more or less) "git flow", just develop along a
single branch, which will be renamed from "develop" to "main". Releases
will use a branch with two commits: The first sets the release version,
the second sets the following `-DEV` version. Once the commit with the
release version has been tagged successfully, the branch will be merged
(without rebasing/squashing!) into "main".

This prepares that step by removing refernce to the "master" branch and
replacing references to "develop" by "main".

Author: martinholters

.github/workflows/Documentation.yml

@@ -3,7 +3,7 @@ name: Documentation
 on:
   push:
     branches:
-      - develop
+      - main
     tags: '*'
   pull_request:
   workflow_dispatch:

.github/workflows/ci.yml

@@ -3,8 +3,7 @@ name: CI
 on:
   push:
     branches:
-      - develop
-      - master
+      - main
     tags: '*'
   pull_request:
   workflow_dispatch:

README.md

@@ -5,9 +5,9 @@
 [![Documentation](https://img.shields.io/badge/docs-dev-blue.svg)](https://hsu-ant.github.io/ACME.jl/dev/)
 [![DOI](https://zenodo.org/badge/48224425.svg)](https://zenodo.org/badge/latestdoi/48224425)
 
-[![CI](https://github.com/HSU-ANT/ACME.jl/workflows/CI/badge.svg)](https://github.com/HSU-ANT/ACME.jl/actions?query=workflow%3ACI+branch%3Adevelop)
-[![codecov](https://codecov.io/gh/HSU-ANT/ACME.jl/branch/develop/graph/badge.svg)](https://codecov.io/gh/HSU-ANT/ACME.jl)
-[![Coverage Status](https://coveralls.io/repos/github/HSU-ANT/ACME.jl/badge.svg?branch=develop)](https://coveralls.io/github/HSU-ANT/ACME.jl)
+[![CI](https://github.com/HSU-ANT/ACME.jl/workflows/CI/badge.svg)](https://github.com/HSU-ANT/ACME.jl/actions?query=workflow%3ACI+branch%3Amain)
+[![codecov](https://codecov.io/gh/HSU-ANT/ACME.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/HSU-ANT/ACME.jl)
+[![Coverage Status](https://coveralls.io/repos/github/HSU-ANT/ACME.jl/badge.svg?branch=main)](https://coveralls.io/github/HSU-ANT/ACME.jl)
 
 ACME is a [Julia](http://julialang.org/) package for the simulation of
 electrical circuits, focusing on audio effect circuits. It allows to

docs/make.jl

@@ -14,6 +14,6 @@ makedocs(
 if v"1.0" ≤ VERSION < v"1.1" # deploy from 1.0
     deploydocs(
         repo = "github.com/HSU-ANT/ACME.jl.git",
-        devbranch = "develop",
+        devbranch = "main",
     )
 end