[HOTFIX] Patch application panic

Mainnet patch - Critical

Patches an issue where rewards for denominations not initialized at genesis cause an application panic in the begin blocker.

This patch can safely be deployed with the existing database, do not reset your node or delete any data.

Diff: v0.9.1...v0.10.0

Update instructions

# from kava directory
git fetch origin
git checkout v0.10.0
make install

# restart kvd process