 the `++` operator on any sequence-like data structure, even those defined in third-party packages.\\n\\nTo solve both of these problems, a future version of Gren will remove syntax for defining custom operators. Operators will be reduced to a fixed set and treated like (special) functions.\\n\\nLets look at an expression like `a + b`. What is `+` in this case? In the future that will depend on what you have in scope. If you have an import statement like `import Int exposing (+)`, then `a + b` will represen