Run CI on main, and record that releases come from it

.github/workflows/codeql-analysis.yml

@@ -13,10 +13,10 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ master ]
+    branches: [main]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ master ]
+    branches: [main]
   schedule:
     - cron: '24 7 * * 0'
 

.github/workflows/main.yml

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

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 Notable changes to `@tinbase/pg-mem`, the tinbase fork of pg-mem.
 
-Released from the `tinbase-npm` branch, which carries the scoped package name; `master` tracks upstream.
+Released from `main`, which carries the scoped package name. Upstream is tracked through the `upstream` remote (`oguimbal/pg-mem`) rather than a branch; the leftover `master` is vestigial.
 
 ## 3.3.0