fix my sloppy oversight of asUint8 missing unchecked suffix in asBool… (#25)

* fix my sloppy oversight of asUint8 missing unchecked suffix in asBoolUnchecked

* fix remove assembly which fails to account for dirty upper 31 bytes

* hopefully more efficient impl

Author: nonergodic

src/libraries/BytesParsing.sol

@@ -96,13 +96,15 @@ library BytesParsing {
     bytes memory encoded,
     uint offset
   ) internal pure returns (bool, uint) {
-    (uint8 val, uint nextOffset) = asUint8(encoded, offset);
+    (uint8 val, uint nextOffset) = asUint8Unchecked(encoded, offset);
     if (val & 0xfe != 0)
       revert InvalidBoolVal(val);
 
+    uint cleanedVal = uint(val);
     bool ret;
+    //skip 2x iszero opcode
     assembly ("memory-safe") {
-      ret := val
+      ret := cleanedVal
     }
     return (ret, nextOffset);
   }