Merge the develop branch to the master branch, preparation to v3.1.0
This merge contains the following set of changes:
* [Oracle, Improvement] Try to detect unsynced node state (#592)
* [Oracle, Improvement] Allow to override JSON RPC error codes (#603)
* [Oracle, Fix] Fix handling of Compound related Transfer events (#595)
* [Oracle, Fix] Add new nonce-related error messages (#599)
* [Deployment, Fix] .env template includes latest changes related to the oracle configuration (#601)
* [Deployment, Fix] Improvements for the local logs configuration (#602)
* [Common, Other] Update the contract's submodule to the release 6.0.0 (#600)