v0.2.2

What's Changed

• main: update utreexo library by @kcalvinalvin in #156
• chaincfg: add calvin kim dnsseeds by @kcalvinalvin in #157
• main: update utreexo library by @kcalvinalvin in #158
• indexers: print time used for generating rand for index tests by @kcalvinalvin in #159
• blockchain: fix printf and make code more obvious by @kcalvinalvin in #160
• main: bump version to v0.2.2 by @kcalvinalvin in #161

Full Changelog: v0.2.1...v0.2.2