Version 4.0.0

Added updated cert for gem signing

Updated version to v3.0.3.

Updated version to v3.0.2

Bump version to 3.0.1.

Merge pull request attr-encrypted#204 from saghaulor/v3

V3

Added cert for gem signing.

Bump to version 1.4.0.

Minor version bump.

Version bump to 1.3.4.