use Di's scope and namespace features.

set Query to be shared within the same namespace.
added wscore/http as required package.
reduced dependent packages.
removed redundant score packages that are required in subsequent packages.
removed twitter since it is not copied from twitter repo.
added psr/log and monolog for appellation development.
try to write a script to build class-preloader cache file.
use container with cache without require.php.
trying to use php.cached (all classes in one file), but not working yet.
use more generic inNamespace to move the PDO definition to a namespace.