0.15.5

Features:

• #454 - King of the Hill strategy
• #611 - Relative Orders use last order as centre price
• #635 - Add auto sort nodelist in config and on dexbot-cli run to CLI
• #637 - Add delete node to CLI configure

Changes:

• #442 / #636 - Staggered Orders: keep virtual orders state across restart also keeping of initial and current orders for visualization purposes
• #640 - Set loglevel on "dexbot" logger
• #643 - Change default node list. For more details on changed list of nodes here.

Fixes:

• #655 - Add missing imports for King of the Hill
• #656 - Fix syntax error in dexbot/ui.py
• #658 / #659 - Fixes for Pull Request #487

Contributors:
@bitfag, @dls-cipher, @joelvai, @thehapax, @MarkoPaasila