* Use cosmossdk.io/errors for deprecated error methods
* Update error registration with cosmossdk.io/errors
* Use cosmossdk.io/math for deprecated sdk.Int alias
* Fix modified proto file
* Update sdk.Int usage in swap hooks
* Update e2e test deprecated method usage
* use kavamint in incentive to calculate staking apy
* use kavamint minting: rewards_earn_staking_integration_test
* update incentive tests to mint only with kavamint
* remove x/mint from incentive tests
* remove x/mint from kava app
* fix minting in x/auction tests
* replace simapp fund calls with test helper
* remove mint state from genesis.json
* Split bid_duration field into forward/reverse durations
* Update params.go
* Update params_test for forward/reverse bid durations
* Remove duplicated import
* Replace bid duration on place bids
* Fix reversed bid errors
* Update auctions test
* Update bidding test
* Update testutil suite to use default forward/reverse bid durations
* Fix missing ReverseBidDuration param field
* Check if auction is reversed on forward bid
* Add test for conversion to reverse auction that reaches maxbid
* Make proto fields backwards compatible
* Use ForwardBidDuration for debt bid
* Make copy of v16 auction types
this doesn't actually work but keeping it in history
* Disable migrations
* Update debt tests to use forward bid duration
