Update to lz4_flex@0.13 and fix MSRV check (#108)

Author: finnbear

.github/workflows/build.yml

@@ -65,7 +65,7 @@ jobs:
           crate: cargo-msrv
           locked: false
       - name: Verify MSRV
-        run: cargo msrv verify --ignore-lockfile
+        run: cargo msrv verify
   fuzz:
     runs-on: ubuntu-latest
     steps:

.gitignore

@@ -1,4 +1,3 @@
 target/
-Cargo.lock
 perf.*
 .idea