Version 2.0
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- Split caching logic out of views\TemplateLoader into an interface
  views\CacheBackend and views\FileCacheBackend.
- Add template usage profiling to views\.
- Add data\ProfilingPDO to add profiling to database access.
- Add base\Profiling static utility class.
- Add http\Input for request data sanitization.

Version 1.0
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- Creation of the CHANGES file.