TLSClient

- Updated tls/TLSClient from Taskwarrior.
tls/c

- Added trust level of TLSClient::strict.
Text

- Added text helper functions for formatting text.
TLSServer

- Added the tri-state trust level from taskwarrior.
TLSServer

- Added 'host' to the ::bind method.
TLSClient

- Inherited changes from Taskwarrior.
TLSServer

- Added new certificate verification code, which is not currently enabled.
TLSServer

- Added diagnostics to the ::init method.
TLSServer

- Put the certificate verification methods adjacent to each other. Next step is
  to start enabling one of them.
PKI

- The 'generate.server' script was assuming that /bin/sh echo supported '-n'.
TLS*

- Modified diagnostic message so that it does not imply that certificate
  verification has already occurred.
s

- Now the server example uses the same IP address as the client.