[feature request] support disabling semicolons in recast.Options

[michaelfromyeg]

Ish-similar to #718, but specifically in the recast.Options, i.e.,:

/**
 * All Recast API functions take second parameter with configuration options,
 * documented in options.js
 */
export interface Options extends DeprecatedOptions {
    /**
     * If you want to use a different branch of esprima, or any other module
     * that supports a .parse function, pass that module object to
     * recast.parse as options.parser (legacy synonym: options.esprima).
     * @default require("recast/parsers/esprima")
     */
    parser?: any;
    /**
     * Number of spaces the pretty-printer should use per tab for
     * indentation. If you do not pass this option explicitly, it will be
     * (quite reliably!) inferred from the original code.
     * @default 4
     */
    tabWidth?: number;
    /**

I'd love a semi: boolean option to disable semi-colons.