PSync version 0.2.0

New features:

• breaking change Compress Sync Data in Full Sync by default (issue #5061, issue #4917)
• Support various compression schemes for compressing IBF and Sync Data (issue #5061)

Changes

• Use constant interest timeout for (discovery) sync Interest in Segment Fetcher (issue #4945)
• Make default jitter shorter, react to NACK after jitter
• Use boost::bimap instead of two std::map variables to store hash to prefix matching