Create Developer Incentives Fund via the community pool

This proposal increases the minimum staking inflation from 20% to 100% and directs all new inflation to the community pool for purposes of funding Kava Developer Incentives. After the funding is complete in approximately 1 year, a follow on proposal will be submitted to turn off this extra inflation. The inflationary KAVA generated by this proposal will be distributed over 4 years to Kava Network Developers. See full details at https://medium.com/kava-labs/kava-network-developer-incentives-298b652281aa.