Version 2.0.0 beta 2

Version 1.x incompatible.

Changelog since version 2.0-beta.1:

• PHP 7.1 compatible
• Added RenderClient class
• Minor speed improvements
• Updated vipnytt/useragentparser to v1.0
• Make sure some cURL options is not overwritten.
• The confusing isHostListed() func is removed.
• Refactored UriParser
• Refactored Clean-param directive classes
• Refactored Host directive classes
• HostClient getWithFallback renamed to getWithUriFallback
• SQL debug methods
• Documentation