- add blind signature functionality to pyelliptic as described in #1409 - add tests for blind signatures - PEP8 fixes for pyelliptic - some minor refactoring is necessary for further integration, this is just a minimal implementation to pass a test
- code distinguishes between OpenSSL 1.1.x and LibreSSL and works with both
- thanks to Wolfgang Frisch <wfr@roembden.net>