Add release checklist

CONTRIBUTING.md

@@ -55,6 +55,7 @@ and install targets automatically.
 xcode-select --install
 ```
 
+* Since you're developing locally, set `let useLocalFramework = true` in `Package.swift`. 
 * Run the iOS build script
 
 ```shell
@@ -71,9 +72,6 @@ Further, the "normal" Xcode build flow always assumes xcframeworks can't change
 so it processes them before any other build rules.
 Given these limitations, we opted for a shell script until further notice.
 
-If Xcode is not behaving well,
-a quick restart of Xcode or resetting the package graph usually clears it up.
-
 ### Android
 
 NOTE: Android is probably broken at the moment!

RELEASE.md

@@ -0,0 +1,10 @@
+# Cutting a release
+
+When cutting a release, follow this checklist:
+
+1. Ensure that all version strings are up to date.
+   Currently this means checking crate and Swift package versions.
+2. Generate the iOS framework using `build-ios.sh --release`.
+   This updates Package.swift and generates a distributable zipped framework under `common/target/ios`.
+3. Create a GitHub release.
+   Upload the zipped XCFramework along with the GitHub release.