Imports of package source

PathSynopsis
github.com/gohugoio/hugo/common/hugio
github.com/gohugoio/hugo/helpersPackage helpers implements general utility functions that work with and on content.
github.com/gohugoio/hugo/hugofsPackage hugofs provides the file systems used by Hugo.
github.com/gohugoio/hugo/hugofs/files
github.com/gohugoio/hugo/langsPackage langs contains the language related types and function.
github.com/pkg/errorsPackage errors provides simple error handling primitives.
github.com/spf13/afero
github.com/spf13/castPackage cast provides easy and safe casting in Go.
osPackage os provides a platform-independent interface to operating system functionality.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
regexpPackage regexp implements regular expression search.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.