Mark version 6.4.1

Version 7.1.1

### Bug fixes

Treat `\8` and `\9` as invalid escapes in template strings.

Allow unicode escapes in property names that are keywords.

Don't error on an exponential operator expression as argument to `await`.

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Version 6.4.0

### New features

Add a static `acorn` property to the `Parser` class that contains the entire module interface, to allow plugins to access the instance of the library that they are acting on.

Version 7.1.0

### Bug fixes

Disallow trailing object literal commas when ecmaVersion is less than 5.

### New features

Add a static `acorn` property to the `Parser` class that contains the entire module interface, to allow plugins to access the instance of the library that they are acting on.

Version 7.0.0

### Breaking changes

Changes the node format for dynamic imports to use the `ImportExpression` node type, as defined in [ESTree](https://github.com/estree/estree/blob/master/es2020.md#importexpression).

Makes 10 (ES2019) the default value for the `ecmaVersion` option.

Version 6.3.0

### New features

`sourceType: "module"` can now be used even when `ecmaVersion` is less than 6, to parse module-style code that otherwise conforms to an older standard.-----BEGIN PGP SIGNATURE-----

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Version 6.2.1

### Bug fixes

Fix bug causing Acorn to treat some characters as identifier characters that shouldn't be treated as such.

Fix issue where setting the `allowReserved` option to `"never"` allowed reserved words in some circumstances.

Version 6.2.0

### Bug fixes

Improve valid assignment checking in `for`/`in` and `for`/`of` loops.

Disallow binding `let` in patterns.

### New features

Support bigint syntax with `ecmaVersion` >= 10.

Support dynamic `import` syntax with `ecmaVersion` >= 10.

Upgrade to Unicode version 12.

Version 6.1.1

### Bug fixes

Fix bug that caused parsing default exports of with names to fail.

Version 6.1.0

### Bug fixes

Fix scope checking when redefining a `var` as a lexical binding.

### New features

Split up `parseSubscripts` to use an internal `parseSubscript` method to make it easier to extend with plugins.