chore: switch default branch to main

Author: sasha-s

.github/workflows/go.yml

@@ -2,9 +2,9 @@ name: Go
 
 on:
   push:
-    branches: [master]
+    branches: [main, master]
   pull_request:
-    branches: [master]
+    branches: [main, master]
 
 jobs:
   build:

.github/workflows/sync-master.yml

@@ -0,0 +1,22 @@
+name: Sync master
+
+on:
+  push:
+    branches: [main]
+
+permissions:
+  contents: write
+
+jobs:
+  sync-master:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Sync master branch
+        run: |
+          git config user.name github-actions[bot]
+          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
+          git push origin HEAD:refs/heads/master --force

Readme.md

@@ -1,4 +1,4 @@
-# Online deadlock detection in go (golang). [![Try it online](https://img.shields.io/badge/try%20it-online-blue.svg)](https://wandbox.org/permlink/hJc6QCZowxbNm9WW) [![Docs](https://godoc.org/github.com/sasha-s/go-deadlock?status.svg)](https://godoc.org/github.com/sasha-s/go-deadlock) [![codecov](https://codecov.io/gh/sasha-s/go-deadlock/branch/master/graph/badge.svg)](https://codecov.io/gh/sasha-s/go-deadlock) [![version](https://badge.fury.io/gh/sasha-s%2Fgo-deadlock.svg)](https://github.com/sasha-s/go-deadlock/releases)  [![Go Report Card](https://goreportcard.com/badge/github.com/sasha-s/go-deadlock)](https://goreportcard.com/report/github.com/sasha-s/go-deadlock) [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0) 
+# Online deadlock detection in go (golang). [![Try it online](https://img.shields.io/badge/try%20it-online-blue.svg)](https://wandbox.org/permlink/hJc6QCZowxbNm9WW) [![Docs](https://godoc.org/github.com/sasha-s/go-deadlock?status.svg)](https://godoc.org/github.com/sasha-s/go-deadlock) [![codecov](https://codecov.io/gh/sasha-s/go-deadlock/branch/main/graph/badge.svg)](https://codecov.io/gh/sasha-s/go-deadlock) [![version](https://badge.fury.io/gh/sasha-s%2Fgo-deadlock.svg)](https://github.com/sasha-s/go-deadlock/releases)  [![Go Report Card](https://goreportcard.com/badge/github.com/sasha-s/go-deadlock)](https://goreportcard.com/report/github.com/sasha-s/go-deadlock) [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
 ## Why
 Deadlocks happen and are painful to debug.