Merge pull request syscoin#361 from syscoin/dev-4.x

Dev 4.x

Merge pull request syscoin#350 from syscoin/dev-4.x

update wallettx comments

Merge pull request syscoin#350 from syscoin/dev-4.x

update wallettx comments

Merge pull request syscoin#335 from syscoin/dev-4.x

Dev 4.x

Merge pull request syscoin#332 from syscoin/dev-4.x

Syscoin 4 merge to master.

-Assets (with hardened ZDAG protocol)
-Sysethereum bridge (ability to trustlessly move across to another blockchain, disabled until block height 51000 at which point it will automatically start validating bridge transactions)
-New masternode ping protocol to avoid network congestion around pinging every masternode. Much more efficient.

Fixed many bugs and issues, improvements to the codebase. Re-based off of latest Bitcoin 0.19x and keep up-to-date with master branch.

Merge pull request syscoin#332 from syscoin/dev-4.x

Syscoin 4 merge to master.

-Assets (with hardened ZDAG protocol)
-Sysethereum bridge (ability to trustlessly move across to another blockchain, disabled until block height 51000 at which point it will automatically start validating bridge transactions)
-New masternode ping protocol to avoid network congestion around pinging every masternode. Much more efficient.

Fixed many bugs and issues, improvements to the codebase. Re-based off of latest Bitcoin 0.19x and keep up-to-date with master branch.

prep for point release

reset mn version

add block hash txid mapping to checksyscoininputs

Bumped Masternode major version