unexport skip function

export Skip function

fix v1 cold start bug

fix error spacing

update module path, bump to v1.0.0rc2

use openbsd isc license

update license from mit to isc

update module path

fix mysql 5.7 bug

fix mysql syntax for 5.7

fix readme spacing

add version flag

add content to migrations, tests

refuse to migrate empty sql files

remove md5 unique constraint

This commit removes the requirement that each migration be unique. In
the case of re-reverting a change (i.e. running the same migration
again), migrate would fail, even though this is fine behavior.

add tty to openbsd pledge

fix compile bug on non-openbsd operating systems

add pledge, unveil for openbsd

Merge pull request #1 from alrs/fix-unprintable-error

fix fmt.Printf

cmd/migrate: Fix unprintable error