Generic safety cleanup (#22)

* create checksum system for versioning
* minor changes to CI
* dart ffi cleanup
* update checksums

.github/workflows/xmruw.yaml

@@ -1,11 +1,5 @@
-name: Build 
-
-
-
-
-on:
-  pull_request:
-    types: [opened, reopened, synchronize]
+name: Build xmruw
+on: [push]
 permissions:
   issues: write
   pull-requests: write