carsonburr

### What happened? Got a compiler SIGSEGV after replacing one identifier with another for the js backend. The illegal access is from the new identifier's `.typ` being nil. This is...

implement speedups with rust v2

8

`pip install -e .` in a virtualenv should build src/markupsafe/_rust_speedups.???.so, assuming you have Rust installed. `python bench.py` to run all benchmarks, rust included. Here's the results on my machine: ```...