apertium-apy mode for geriaoueg (biltrans in context)
completed by: Sushain Cherivirala
mentors: Kevin Brubeck Unhammer, Jonathan Washington, Francis Tyers
apertium-apy function that accepts a context (e.g., ±n ~words around word) and a position in the context of a word, gets biltrans output on entire context, and returns translation for the word