Komodo 0.7.1 [Hydra]

changelog:

general refactoring
general enhancements
update dns seed
rm dead chains
bump version

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contributors:

@jl777
@DeckerSU
@jmjatlanta
@dimxy
@tonymorony
@artemii235
@smk762
@gcharang
@Alrighttt
@ca333

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Virustotal checks:

Windows: https://www.virustotal.com/gui/file/2edf6dfd15b24dca6875c778e921652faa340636f51ea991bef8ecc796223834/detection
macOS: https://www.virustotal.com/gui/file/2abeb2ff4843b2a87ae37fa2a80a74f5b715260a66b0da13fbb2e6294c6395ce/detection
Linux: https://www.virustotal.com/gui/file/2aea60c3f905bff9be0d15fa2beef3052bbb9f8c730846384e4f353efac07241/detection