Update crypto-com-chain branch (#2)

* build(deps): update tai64 requirement from 2 to 3 (informalsystems#22)

Updates the requirements on [tai64](https://github.com/iqlusioninc/crates) to permit the latest version.
- [Release notes](https://github.com/iqlusioninc/crates/releases)
- [Commits](iqlusioninc/crates@canonical-path/v2.0.0...tai64/3.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

* max_gas should be i64, can be -1

* remove unneed clones

* remove secret_connection

* implement utility traits for tendermint data types

tendermint/src/abci/transaction/hash.rs

@@ -34,6 +34,7 @@ impl Default for Hash {
         // hash of empty data
         let mut bytes = [0u8; LENGTH];
         bytes.copy_from_slice(&Sha256::digest(&[])[..LENGTH]);
+        Hash::new(bytes)
     }
 }