--only now requires full migration name

[chadxz]

I recently upgraded from 1.5.1 to 1.5.4 and noticed that a command that i used to run, namely

knex-migrate up --only 20180315084901

Didn't run only that migration, but instead, ran all migrations. Upon investigating, I found that the following command does work:

knex-migrate up --only 20180315084901_create_rj_object

This was the full name of the migration, minus the .js extension.

I haven't investigated, but I'd be willing to bet that the umzug upgrade from ^1.11 to ^2.1 is the likely culprit

anyway, might be worth possibly releasing a new major version and deprecating 1.5.2, 1.5.3, and 1.5.4

[chadxz]

looks like the cause is in commit b357f44 which means 1.5.2 is unaffected