xslate.go
func DefaultCompiler(tx *Xslate, args Args) error {
	tx.Compiler = compiler.New()
	return nil
}
func DefaultCompiler(tx *Xslate, args Args) error {
	tx.Compiler = compiler.New()
	return nil
}
// DefaultCompiler sets up and assigns the default compiler to be used by
// Xslate. Given an unconfigured Xslate instance and arguments, sets up
// the compiler of said Xslate instance. Current implementation
// just uses compiler.New()