py-asn1crypto: updated to 1.4.0

1.4.0
- `core.ObjectIdentifier` and all derived classes now obey X.660 則7.6 and
  thus restrict the first arc to 0 to 2, and the second arc to less than
  40 if the first arc is 0 or 1. This also fixes parsing of OIDs where the
  first arc is 2 and the second arc is greater than 39.
- Fixed `keys.PublicKeyInfo.bit_size` to return an int rather than a float
  on Python 3 when working with elliptic curve keys
- Fixed the `asn1crypto-tests` sdist on PyPi to work properly to generate a
  .whl

(adam)