* refactor bidding test
* add some more bid test cases
* add balance checks to bid tests
* add more checks to bid tests
* add min bid increments
* protect against negative lot amounts
* fix params tests
* change endblocker to beginblocker
* update spec
* fix params tests
* fix: update alias
Co-authored-by: Kevin Davis <karzak@users.noreply.github.com>
