Version 0.7.8

This is bug fix release.

Following issue was fixed:

• Incorrect handling of fork that contains an invalid block

The issue may lead to the stalled node. If you experienced node's failure to append new blocks, please update.

When updating from 0.7.x, there's no need to delete blockchain or state files. If you are updating from 0.6.x, please be sure to read 0.7.5 release notes to familiarize yourself with recommended update procedure.