[Do not merge] test for CI

[specialtactics]

Test to see if master CI tests pass

[coveralls]

Coverage remained the same at 99.218% when pulling f5c4bc2 on specialtactics:chore/test into 40ef1fc on hyperwallet:master.

[specialtactics]

Hi maintainers, this is to try and figure out why the test in PR #23 failed. As you can see here it fails in a different PHP version (7.3).

If you run this locally,

while (true); do ./vendor/bin/phpunit --filter=testShouldFailDecryptionWhenWrongPrivateKeyIsUsed; done

You will find it randomly fails sometimes. So it is not related to any changes in this or that pull request.

[specialtactics]

I've traced the problem to this file phpseclib/phpseclib/Crypt/RSA.php and the function _rsadp whereby the $c->compare($this->modulus) > 0) condition evaluates to true.

I'm not sure why, though I would also recommend you use a much more modern library for these set of functionality, however the easiest workaround for now may be just to take into account this failure condition.

[specialtactics]

Did a PR to fix it here:
#44