* implement swp airdrop to usdx depositors to hard
* verify swp airdrop amount, total supply, affected users
* remove unused test code
* add map as go file
* update tests to use stored variable
* re-add snapshot test
* update snapshot testdata
* remove unused code for generating swp airdrop map
* remove snapshot test
* add auth test data
* add periodic vesting account migration
* assert owned coins are equal and unchanged during migration
* add script for generating test data from a genesis file
* remove commented import
* touch ups
* don't pretty print test data for auth module; update generate script to
use jq -c option
* fix typo in comment, improve clarity of assertions
* add context to migrate auth assertions
* add 180 days check for spendable coins
* asssertion context
* pr feedback - add assertions, touch up assertion msgs, and fix migration test to correctly
type assert pointer
