status fails with mysql if the dsn does not have parseTime=true

[ntindall]

To reproduce: run ./bin/goose mysql $DSN status where DSN is a DSN with no parameters.

This produces the following output:

    Applied At                  Migration
    =======================================
2018/03/29 22:07:13 sql: Scan error on column index 0: unsupported Scan, storing driver.Value type []uint8 into type *time.Time

I modified by DSN to have the parseTime=true parameter, and the problem subsides. Should goose really be so opinionated about how the DSN is formatted in order to work?

We could consider appending / inserting the &parseTime=true option into the dsn param sequence, if it is not present. Alternatively, we changing the struct holder to take a string and then parse it as needed (but maybe we need to strip parseTime in that case?).

[VojtechVitek]

Both options sound good to me. Can you provide Pull Request for this?

[ntindall]

@VojtechVitek #102