v0.6.0-rc0

BREAKING CHANGES:

• [monitor] Use new executable binary in monitor

FEATURES:

• [record] Add the record module of the data certification on blockchain
• [iservice] Add the feature of iService definition
• [cli] Add the example description in the cli help
• [test] Add Cli/LCD/Sim auto-test

BUG FIXES:

• Fix software upgrade issue caused by tx fee
• Report Panic when building the lcd proof
• Fix bugs in converting validator power to byte array
• Fix panic bug in wrong account number