- turn public methods into static ones
- turn "domain" prop into static const

- PR requested changes
- Listening for tab / window focus in case the user allows tracking on another tab / window or change browser settings / vpn

ToDo:
- Should use BottomOverlay
- Component doc comment

- types fix
- setTrackerUrl & trackingScriptUrl urls fix
- add default setTrackerUrl value
- now using a window `focus` listener instead of document `visibilitychange` one

…null and string[] as options value’s type

PR #56
Requested changes by Sisou
#56 (review)

- `options.setSiteId` doesn’t have a default value anymore, and is now required
- Renamed `DEFAULT_TRACKING_URL` to `DEFAULT_TRACKING_SCRIPT_URL`
- Moved the default `geoIpServer` value to a constant named `DEFAULT_GEOIP_SERVER_URL`
- Added possibility to set the cookie's attributes `secure` and `sameSite`
- Added a comment explaining the two `localStorage` keys
- Changed default lifetime of the cookie from 20 years to 10 years since 20 years would not work on 32bits systems. (the cookie would just disappear instantly)

- now loading Matomo tracking script before checking for UI requirement, but disable cookie usage before user give consent (if in EEA)
- removed `allowBrowserData` since we’re tracking browser data by default, without asking for consent
- fixed `geoIpServer` @prop default value
- now checking if `_paq` & `_mtm` are objects that have a `push` method, instead of checking if they’re Arrays (since they’re not Arrays, but objects with a single `push` method)
- removed the public static getter `allowsBrowserData` and the public static method `allowBrowserData `
- added a static public getter `isOutsideEEA`, since we can enable Cookies without consent for countries outside the EEA
- turned the `execFunction` method into a async one, allowing to `await` for the function result

- add a `trackPageView` public static method for easy page tracking on single-page apps
- set trackPageView by default to track first page view

…on is disabled