- made LDDocument use shared pointers, this eliminates a lot of document-related crashes

- subfile inverting now detects flatness and acts accordingly instead of naively applying invertnext to everything

- simplified parse error handling

- when saving, prepare the data first into a buffer and then write to disk, minimizing the time needed to perform the I/O operation.

- made coordinate rounding precision configurable

- further edits to crashcatcher

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mercurial