- Add CommitToArgument without fedpegScript or signblockscript
- Modify CreateGenesisBlock to take in the genesis scriptSig
- Add AppendInitialIssuace without assets support
- AppendInitialIssuance to genesis block for Custom chain only
- Add -initialfreecoins option
- Modify tests to work with initialfreecoins
The block height validation is gated by the startup option
`con_blockheightinheader`, accesible in custom chains only
using option `chain=<name>`. Only if set to true will this
field be (de)serialized and evaluated in consensus logic.
Otherwise the field is simply ignored, other than being
stored in memory as the default value 0.
Removes medianfeerate result from getblockstats.
Adds feerate_percentiles which give the feerate of the 10th, 25th, 50th,
75th, and 90th percentile weight unit in the block.
