Update docs

scripts/upgradeable/transpile-onto.sh

@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [ $# -lt 1 ]; then
+  echo "usage: bash $0 <target> [<base>]" >&2
+  exit 1
+fi
+
+set -x
+
+target="$1"
+base="${2-}"
+
+bash scripts/upgradeable/transpile.sh
+
+commit="$(git rev-parse --short HEAD)"
+branch="$(git rev-parse --abbrev-ref HEAD)"
+
+git add contracts
+
+# detach from the current branch to avoid making changes to it
+git checkout --quiet --detach
+
+# switch to the target branch, creating it if necessary
+if git rev-parse -q --verify "$target"; then
+  # if the branch exists, make it the current HEAD without checking out its contents
+  git reset --soft "$target"
+  git checkout "$target"
+else
+  # if the branch doesn't exist, create it as an orphan and check it out
+  git checkout --orphan "$target"
+  if [ -n "$base" ] && git rev-parse -q --verify "$base"; then
+    # if base was specified and it exists, set it as the branch history
+    git reset --soft "$base"
+  fi
+fi
+
+# commit if there are changes to commit
+if ! git diff --quiet --cached; then
+  git commit -m "Transpile $commit"
+fi
+
+git checkout "$branch"