Changelog rsa version 3.4

[pyup-vuln-bot]

Keywords: vulnerability,security

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• Moved development to Github: https://github.com/sybrenstuvel/python-rsa
• Solved side-channel vulnerability by implementing blinding, fixes 19
• Deprecated the VARBLOCK format and rsa.bigfile module due to security issues, see
  Vulnerability in bigfile.py sybrenstuvel/python-rsa#13
• Integration with Travis-CI [1], Coveralls [2] and Code Climate [3]
• Deprecated the old rsa._version133 and rsa._version200 submodules, they will be
  completely removed in version 4.0.
• Add an 'exponent' argument to key.newkeys()
• Switched from Solovay-Strassen to Miller-Rabin primality testing, to
  comply with NIST FIPS 186-4 [4] as probabilistic primality test
  (Appendix C, subsection C.3):
• Fixed bugs 12, 14, 27, 30, 49

[1] https://travis-ci.org/sybrenstuvel/python-rsa
[2] https://coveralls.io/github/sybrenstuvel/python-rsa
[3] https://codeclimate.com/github/sybrenstuvel/python-rsa
[4] http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf