Parity Ethereum 2.1.0-beta

Parity-Ethereum 2.1.0-beta is released! Look at this!

Important notices:

• This release moves the 2.1 track of Parity-Ethereum to beta.
• This release contains a low-severity issue with the web-sockets ports. #9545
• This release resolves a potential network fragmentation issue. #9526
• With this release, all versions of Parity Ethereum 1.x prior to 2.0 reached end of life.
• Users are urged to upgrade to 2.0.5-stable or 2.1.0-beta.

Further changes worth highlighting:

• Generalized blockReward and difficultyBombDelays config (#9480): This removes eip649* parameters from chain specs and allows blockReward to accept multi. Please review your chain-specs!
• Implement EIP234 block_hash for eth_getLogs (#9256): If block_hash and from_block/to_block present, return error. This also changes eth_getLogs to return error if any of block_hash/from_block/to_block cannot be found.
• The default gas_floor_target was increased to 8_000_000, the default gas_cap to 10_000_000.
• Light clients provide the actual account for eth_coinbase RPC (#9383). Note, this behavior is different from the full client where we return the 0x0 address if no accounts are found!
• Light servers give free credits for reserved peers (#9448): When connecting to a reserved peers in light client, assign free credits to them. This fixes the scenario where a home server is running a full node, and another light client connects to the full node as a reserved peer.
• Multi-threaded snapshot creation (#9239): to speed up the generation of snapshots on disk, this can be parallelized now. By default N/2 CPU cores are being used. Use --snapshot-threads flag to customize the number of threads.
• Remove all dapp permissions related settings (#9120). This completely removes dapp permission settings from AccountProvider and JSON-RPC: In JSON-RPC, all available accounts are returned, regardless of the origin; previously we return accounts based on dapps policy. It's not possible to set a "default account" (as for dapps) any more; this is now always the first account in the available account list.
• Remove unused --tx_queue_gas parameter (#9153). Please use parity --help to learn about available transaction queue strategies.

Binaries will be provided once we figure out how Gitlab works.

System	Option	Resource
	Snapcraft	snapcraft.io/parity
	Docker	hub.docker.com/r/parity/parity

The full list of included changes can be found in the CHANGELOG.