0.12.1

• Fixed incorrect parsing when after-change's start position is not the same as before-change's start position. For example, this happens when calling upcase-region on a region whose first character is already upcased.
• Upgraded emacs crate to 0.14.1 to fix the compilation error on Rust 1.47.
• Upgraded tree-sitter crate to 0.17.1 to fix handling of repeated field names in queries.