Fix templating engine unescaped tag modifier
Fix bug in MySQL binds

It was throwing a BindException if you provided binds but didn't have
any variables in the query. It now doesn't care what binds you give it.
It should only throw a BindException if a bind doesn't exist for a
variable in the SQL
Use Namespaces and re-arrange the folders to comply with PSR-0 autoloading specification