`includeGlobs` is not supported

Hi there! I am using your polyfill to register my content script via:

`var content_script_registration_dict = {`
`"matches":["*://*.twitch.tv/*"],`
`"includeGlobs":['*player.twitch.tv*'],`
`"js":[{file:"my_javascript.js"}],`
`"css":[{file:"my_css.css"}]`
`}`

`chrome.contentScripts.register(content_script_registration_dict);`

However I am noticing that my includeGlobs segment is being ignored. Instead, it ignores the includeGlobs match pattern, and injects my_javascript.js into all pages under `matches` regardless of whether it matches `includeGlobs` or not.

When I instead place my JavaScript code inside the manifest.json file, everything works as expected, thus it appears to be an issue with this package.

I think that this is an important fix for this package since includeGlobs is currently not behaving as expected.

Thanks!