* Allow custom testnets to define more parameters and to make peer connections based on the initial_testnet_peer config field
* Updates latest stored test config
* Update zebra-network/src/config.rs
Co-authored-by: Arya <aryasolhi@gmail.com>
---------
Co-authored-by: Marek <mail@marek.onl>
* Adds a `target_difficulty_limit` field on `testnet::Parameters`
* updates test to increment block nonce until finding a block that's below the difficulty threshold
* increment the nonce while the difficulty is invalid instead of while the difficulty threshold is invalid
* Adds comments
* moves network Magic type from zebra-network to zebra-chain
* Adds `network_magic` field to `testnet::Parameters` and uses the regtest network magic from zcashd
* Add a network magic config field for custom testnets
* Adds/updates tests
* Update zebra-chain/src/parameters/network/testnet.rs
* Adds a link to the Regtest network magic in zcashd
---------
Co-authored-by: Alfredo Garcia <oxarbitrage@gmail.com>
Arya