Normally the RevisionHeight is incremented at each height while keeping
RevisionNumber the same. However some consensus algorithms may choose to
reset the height in certain conditions e.g. hard forks, state-machine
breaking changes In these cases, the RevisionNumber is incremented so that
height continues to be monitonically increasing even as the RevisionHeight
gets reset
Normally the RevisionHeight is incremented at each height while keeping RevisionNumber the same. However some consensus algorithms may choose to reset the height in certain conditions e.g. hard forks, state-machine breaking changes In these cases, the RevisionNumber is incremented so that height continues to be monitonically increasing even as the RevisionHeight gets reset