New Algorithms

[jtesta]

I've implemented support for new algorithms. Some of them are described in RFC4344, RFC4250, and RFC4432, and others are implemented in somewhat obscure SSH libraries.

FYI, the changes made to output_algorithm() are needed to suppress empty "[info]" comments for some of the new algorithms (for example: "(key) ssh-rsa-sha256@ssh.com -- [info] ").

[codecov]

Codecov Report

Merging #31 into develop will decrease coverage by 0.13%.
The diff coverage is 57.14%.

@@             Coverage Diff             @@
##           develop      #31      +/-   ##
===========================================
- Coverage    97.41%   97.27%   -0.14%     
===========================================
  Files            1        1              
  Lines         1430     1433       +3     
===========================================
+ Hits          1393     1394       +1     
- Misses          37       39       +2

Impacted Files	Coverage Δ
ssh-audit.py	97.27% <57.14%> (-0.14%)	⬇️

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[coveralls]

Coverage decreased (-0.1%) to 97.278% when pulling 1bb5490 on jtesta:new_algs into d8eb46d on arthepsy:develop.

[coveralls]

Coverage decreased (-0.1%) to 97.278% when pulling 1bb5490 on jtesta:new_algs into d8eb46d on arthepsy:develop.

[coveralls]

Coverage decreased (-0.1%) to 97.28% when pulling a3f126a on jtesta:new_algs into d8eb46d on arthepsy:develop.

[coveralls]

Coverage decreased (-0.1%) to 97.28% when pulling a3f126a on jtesta:new_algs into d8eb46d on arthepsy:develop.

[coveralls]

Coverage decreased (-0.1%) to 97.28% when pulling a3f126a on jtesta:new_algs into d8eb46d on arthepsy:develop.

[jtesta]

Hi.. will you merge these back upstream? #thx/bye ; )

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