Added new class files
Fixes #88. Removed all utility files and any reference to _Utility suffix.
Removed DS for #60
Removed accidental quote in URL
Updated changelog
Added error class and handler functions.
Removed DS for #60
Removed DS for #60
Removed DS for #60
Removed DS for #60
Closes #60 - all unneeded DS removed
Merge branch '60-RemoveDS-Improvement'
Merge branch 'master' of github.com:g105b/PHP.Gt
Merge branch '88-UtilityReplacement-Improvement'
Closes #71 - error handler function in place, ready to be extended for logging, extra handling, etc.
Merge branch '71-ErrorHandler-Improvement'
Missing concatenator
Merge branch 'master' into 66-User-PageTool-Feature