Release v2.0.0

This is a mandatory release for all mainnet users for the upcoming Deneb/Cancun fork on Mainnet, at epoch 269568.

Breaking Changes

Since v1.1.3, openexecution is now rust-based. Users should consult --help.
No PostgreSQL DB is needed, information is now stored in memory for 64 slots.
No --db-* arguments are required anymore.

Changes

• Move to rust version
• Add Deneb/Cancun support
• Add holesky support via the --holesky flag
• Support batched requests from Lodestar and Prysm
• Support param-less requests from Prysm
• Add GET /status endpoint

Release v1.1.0

fix headers

Release v1.0.1

v1.0.1 lets operators set a fee recipient override, as well as a chance for this override to happen. This could be used as a "fee" for maintenance or to discourage long-term usage of the program.
Flags for this are `fee_override_address` and `fee_override_chance)
v1.0.1 also adds the `log-level` flag, and logs more things.

Release v1.0.0

remove harcode