diff --git a/.cargo/config b/.cargo/config
new file mode 100644
index 00000000..2df10bcc
--- /dev/null
+++ b/.cargo/config
@@ -0,0 +1,2 @@
+[alias]
+cli = ["run", "-p", "mentat_cli"]
diff --git a/fixtures/old/README.md b/fixtures/old/README.md
new file mode 100644
index 00000000..61e245ec
--- /dev/null
+++ b/fixtures/old/README.md
@@ -0,0 +1,3 @@
+Mentat has gone through several pre-release changes that are (deliberately) not
+reflected in current version numbers. These old files are preserved for
+historical reference.
diff --git a/fixtures/old/v1empty.db b/fixtures/old/v1empty.db
new file mode 100644
index 00000000..7b432099
Binary files /dev/null and b/fixtures/old/v1empty.db differ
diff --git a/fixtures/v1tofino.db b/fixtures/old/v1tofino.db
similarity index 100%
rename from fixtures/v1tofino.db
rename to fixtures/old/v1tofino.db
diff --git a/fixtures/v2empty.db b/fixtures/old/v2empty.db
similarity index 100%
rename from fixtures/v2empty.db
rename to fixtures/old/v2empty.db
diff --git a/fixtures/v1empty.db b/fixtures/v1empty.db
index 7b432099..8361ab8c 100644
Binary files a/fixtures/v1empty.db and b/fixtures/v1empty.db differ
diff --git a/fixtures/v1toodle_empty.db b/fixtures/v1toodle_empty.db
new file mode 100644
index 00000000..fa25cd06
Binary files /dev/null and b/fixtures/v1toodle_empty.db differ