# Functions
FindSource determines the correct Installer for the given source.
Install installs a pack repo to $DRAFT_HOME.
New determines and returns the correct Installer for the given source.
NewLocalInstaller creates a new LocalInstaller.
NewVCSInstaller creates a new VCSInstaller.
Update updates a pack repo in $DRAFT_HOME.
# Structs
LocalInstaller installs pack repos from the filesystem.
VCSInstaller installs packs from a remote repository.