Add ECDSA support
Add ECDSA support - fix
Add fingerprint type 2 support (sha-256). Related to issue #1 and #2.
Fix typo: passwd -> passed (rather confusing because passwd has actual meaning).
Merge remote-tracking branch 'a3/sshfp-typo-passwd'
Merge remote-tracking branch 'a2/master'

Conflicts:
	sshfp