func (w *SnowballWord) RemoveFirstSuffix(suffixes ...string) (suffix string, suffixRunes []rune) {
	return w.RemoveFirstSuffixIn(0, suffixes...)
}
func (w *SnowballWord) RemoveFirstSuffix(suffixes ...string) (suffix string, suffixRunes []rune) {
	return w.RemoveFirstSuffixIn(0, suffixes...)
}
// Removes the first suffix found