Added Util::comment();
Added the GitHub wiki as a submodule;
Doc fixes.
Reorganized tests:
    - Everything is within a "Test" namespace, eliminating pollution of auto-complete suggestions in IDEs
    - Persistent tests now require PHP >= 5.3.9 (in accordance with PEAR2_Cache_SHM) and are otherwise skipped
    - Connection tests are done for all connection types;
Added Util::comment();
Adjusted Client::login() to consume the !done or !fatal response even when called on an already logged in connection;
Adjusted the RouterOS settings file to add a 1 second delay after the DHCP client call, to ensure proper DNS resolutions down the script;
Using ADH implicitly (without a context) will also explicitly set verify_peer to false, for compatibility with PHP 5.6+;