v0.5.0

• NEW: add default schema for 4-line utterances (#29)
• NEW: add literal word translation line (\wlt) (#35)
• NEW: add word transcriptions line (\w) (#36)
• NEW: add utterance metadata line (#) (#32)
• CHANGE: treat duplicate glosses within the same word as discontinuous morphemes (#30)
• CHANGE: the morphemic analysis (\m) and glosses (\gl) lines must be codependent (#33)
• CHANGE: non-breaking hyphens must be treated as word characters (#34)
• CHANGE: note lines (\n) should follow the same language-identifying convention as other lines (#38)
• DOCS: clarify that infixes are supported (#31)