* Adds req testing methodology, needs fixes
* Improves dependency exception handling
* Better meets_requirements implementation
Still need to adjust tests to fake installation
* Changes to exception boolean to enable tool check
tests and class variables modified for new tool check
* Adjust test_get_scans to use appropriate variable
* Adds Go requirement where relevant
* Adds missing scan dependencies
* Add clarification to error message
* fixed up config.defaults definition
tools-dir and database-dir now use defaults.home value
* added tool definition file; closes#54
* added basic PoC for waybackurls scanner; updated helpers.py test
* added Endpoint/Target parsing; updated existing tests to pass
* added tests for waybackurls
* added WaybackurlsScan to FullScan
* added documenation for WaybackurlsScan