Already checked in the outer "if".
JSHint.
Support tagNumber of arbitrary length (via Int10).
Fix copy-paste error in copyright.
Marginally faster parseOID.
Add 4096 bit test.
Initial support for negative numbers.
Negative nunmbers: easier sign extension & more tests.
Add proper bit counting for negative and padded values.
propagate from branch 'it.lapo.asn1js.github-5' (head b931f4d339abc9f989ad38e3d36aec68256cbf53)
            to branch 'it.lapo.asn1js' (head 57c65b5f8aea66acf97fb46ffa573df8813a7bf5)
Add credits for patch.
Closes #5 on GitHub.