Address verification

[egonspace]

Summary

This PR(#298) has led us to treat address as string. In connection with this operation, the address string is verified at entry point as much as possible, and internally, the address is used without conversion. It is necessary to check address string verification throughout the code.

Especially, we should consider this TODO.

func (aa *AccAddress) UnmarshalJSON(data []byte) error {
	var s string
	err := json.Unmarshal(data, &s)
	if err != nil {
		return err
	}
	// TODO: address validation?
	*aa = AccAddress(s)
	return nil
}

Problem Definition

Proposal

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[egonspace]

There is no big problem, so close.