Wrong pluralization of "nucleus"

[papb]

The plural of "nucleus" should be "nuclei". The rare plural form "nucleuses" should also be recognized to be singularized correctly.

Current behavior:

inflection.singularize("nucleus") // "nucleu" (wrong)
inflection.singularize("nucleuses") // "nucleuse" (wrong)
inflection.singularize("nuclei") // "nuclei" (wrong)
inflection.pluralize("nucleus") // "nucleus" (wrong)
inflection.pluralize("nucleuses") // "nucleuses" (correct)
inflection.pluralize("nuclei") // "nucleis" (wrong)