Merge branch 'main' of github.com:jonathandturner/engine-q

TODO.md

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+# Todo
+- [x] Env shorthand
+- [x] String interpolation
+- [x] Aliases
+- [x] Env vars
+- [x] Sub commands
+- [x] Floats
+- [x] Tests
+- [x] Decl requires $ but shouldn't
+- [x] alias highlighting at call site
+- [x] refactor into subcrates
+- [x] subcommand alias
+- [x] type inference from successful parse (eg not `List<unknown>` but `List<int>`)
+- [ ] finish operator type-checking
+- [ ] Column path
+- [ ] Ranges
+- [ ] Source
+- [ ] Autoenv
+- [ ] Block params
+  
+## Maybe: 
+- [ ] default param values?
+- [ ] Unary not?