file-path-th-0.1.0.0: Template Haskell utilities for filepaths.

e.g. if this source file is in my-project/src/Foo/Bar.hs, fileRelativeToAbsoluteStr "......configsettings.yml" will load the path at my-project/config/settings.yml.
If this function is provided an absolute path, it will simply canonicalize that path by calling canonicalizePath rather than compute an absolute path from a relative path.