Make grammar::Error more verbose. #28
Merged
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The carried
libloading::Erroris useful to debug actual issues occurring on dependent projects — I had to adapt a bit of code in kak-tree-sitter to pinpoint an issue while loading grammars with the wrong symbol (I was still trying to read tree_sitter_ while the API of tree-house sets the prefix on its own), and I could have seen that right away if the {err} was present in the Display impl.Context.