* [DEV-259] Allow to spend genesis coinbase, and use ProcessBlock to add genesis to the DAG like any other block
* [DEV-259] fix IsCurrent to check genesis timestamp if needed
* [DEV-259] add genesisPastUTXO as separate function
* [DEV-364] Add fee transactions validation
* [DEV-364] make NextBlockFeeTransactions for creating block templates
* [DEV-364] apply coinbase rules to fee transaction is some cases
* [DEV-364] Add comments
* [DEV-364] put getTXO as separate function
* [DEV-364] Make getParentsFeeData a separate function
* [DEV-364] fix calculateFees
* [DEV-364] force maximum sequence for fee transactions
* [DEV-364] add TestValidateFeeTransactions
* [DEV-364] change fee transaction to be one tx per block rather than one tx for each blue
* [DEV-364] fix tests
* [DEV-364] Use constants instead of inline numbers
* [DEV-345] Validate that gas and payload are 0 when required by sub-network
* [DEV-345] Remove check for txOut.Value < 0, since txOut.Value is a uint64
* [DEV-345] Added tests for CheckTransactionSanity
* [DEV-345] Remove checks for Gas and Payload validity in wire.MsgTx.Decode
* [DEV-345] Verify that payload in Gas sub-network is always 8 bytes (uint64).
* [DEV-345] Renamed tstCheck{Script/Rule}Error to check{Script/Rule}Error
* [DEV-345] Improved formatting
* [DEV-312] Take in account subnetwork's GAS limit, when adding
transactions to block. Try to do that optimally.
* [DEV-312] Fixed GAS overusage calculation
* [DEV-337] Make sure that a transaction that uses more gas than the total allowed for sub-network
* [DEV-337] Moved transaction GAS check to mempool
* [DEV-337] Added Unit test for gas usage in transaction
* [DEV-337] Fixed build
* [DEV-337] Fixed tests stuff
* [DEV-337] Removed TODO comment
* [DEV-307] Implemented adding pending registry transactions.
* [DEV-307] Implemented a skeleton for the sub-network registry algorithm.
* [DEV-307] Implemented the serialization/deserialization logic for pending sub-network transactions.
* [DEV-307] Implemented marking sub-network registry transactions as successfully registered.
* [DEV-307] Implemented clearing pending sub-network entries and writing registered sub-networks.
* [DEV-307] Added comments for all the dagio functions.
* [DEV-307] Fixed a couple of bugs and added a test for checking serialization/deserialization of pending sub-network transactions.
* [DEV-307] Implemented getting a registered sub-network's gas limit.
* [DEV-307] Updated sub-network announcement transaction validation rules.
* [DEV-307] Specified what is validated.
* [DEV-307] Added initialization for lastSubNetworkID.
* [DEV-307] Renamed extractValidSubNetworkRegistryTxs to validateAndExtractSubNetworkRegistryTxs to better reflect what it does.
* Dev 303 implement block finality (#139)
* [DEV-303] Implement block finality
* [DEV-303] Add finality tests
* [DEV-303] Make finality tests use maybeAcceptBlock
* [DEV-303] Only check finality rules if we are fastAdd mode
* [DEV-303] replace hasBiggerFinalityScoreThan checks with .finalityScore()
* [DEV-307] Forgot to actually create the sub-network buckets.
* [DEV-307] Wrote a full-flow test for sub-network registry and fixed a couple of bugs that it had uncovered.
* [DEV-307] Took firstSubNetworkID out of dagconfig.Params. It's unnecessary there.
* [DEV-307] Added persistance for dag.lastSubNetworkID.
* [DEV-307] Moved sub-network stuff to their own files. Got rid of firstSubNetworkID. Replaced SubNetworkReservedLast with SubNetworkUnreservedFirst. Added ErrSubNetworkRegistry.
* [DEV-307] Added a newline at the end of dag_test.go.
* [DEV-307] Renamed previousFinalityPoint to initialFinalityPoint.
* [DEV-307] Moved sub-network IO stuff to subnetworks.go and subnetworks_test.go.
* [DEV-307] Merged dbPutRegisteredSubNetworkTx and dbRegisterSubNetwork. Fixed a too-big allocation and a block double-processing bug.
* [DEV-307] Simplified the serialized representation of a slice of transactions.
* [DEV-307] Fixed comments.
* [DEV-303] Implement block finality
* [DEV-303] Add finality tests
* [DEV-303] Make finality tests use maybeAcceptBlock
* [DEV-303] Only check finality rules if we are fastAdd mode
* [DEV-303] replace hasBiggerFinalityScoreThan checks with .finalityScore()
* [DEV-308] Enforce tx order in block to be by sub-network ID
* [DEV-308] Use mutable block in TestCheckBlockSanity
* [DEV-308] Fixed comment
* [DEV-308] Fixed TestCheckBlockSanity: use invalid block instead of modifying good block
* [DEV-308] Changed name of block in TestCheckBlockSanity
* [DEV-255] create checkConnectToPastUTXO and move the required functionalities to it from checkConnectBlock
* [DEV-255] get rid of checkConnectBlock
* [DEV-255] rename pNode -> node
* [DEV-255] add comment to describe ErrWithDiff
