haskell-tree-sitter

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The TSNode type has cryptic field names, and uses accessor functions for start_byte() and start_point(), but in reality, these two fields correspond directly to fields on the node:

• ts_node_start_byte
• ts_node_start_point

So when loading a node into haskell via the FFI, we can remove the separate startByte and startPoint fields from the Node struct, in order to reduce the amount of data that we copy. This breaks the encapsulation of the TSNode API, but I think that's ok to do in a Tree-sitter binding library.