v0.4.0.0

• AST datatypes use a shared Token datatype for all anonymous leaves.
• Bumps the lower bound on tree-sitter to 0.5.
• AST named sum datatypes are represented as newtype wrappers around sums constructed with :+:.
• AST named & anonymous sum types are represented as balanced binary trees of :+:s instead of right-chained lists.
• Rename the bytes field of leaves to text.

v0.3.0.0

• Adds AST datatypes in TreeSitter.Java.AST which you can use with TreeSitter.Unmarshal.