v0.13.0

• allow correct size allocation for data views #257

  Implement a mechanism which allows to predict the number of
  bytes needed to serialize any of the data-structures used by the
  adblocker, ahead of time (before serialization). This allows to lift
  the limitation of size completely (beforehand, we had to allocate
  a safe amount of memory to be sure there would be enough space).
  As a benefit, only the required amount of memory is used during
  initialization and updates, and there is no longer an arbitrary and
  hard-coded upper limit.

• create new @cliqz/adblocker-content package with common utils #264

  We currently rely on rollup to create a small bundle for content
  related code imported from @cliqz/adblocker. Multiple times in
  the past the bundler was not aggressive enough and code from
  background was pulled in content bundles. To make sure we do not
  have this issue again, all these content-scripts helpers are moved
  into their own package.

• provide helpers to download and build engines from lists #280

  This change allows to start blocking ads with very little logic in
  Webextension, Electron and Puppeteer platforms! To achieve this,
  blockers abstraction now provide static methods to fetch pre-built
  engines from Cliqz's CDN or build them from scratch using lists of URLs
  to subscriptions. Here is how it looks like:

  Webextension:

  import { WebExtensionBlocker } from '@cliqz/adblocker-webextension';
  
  WebExtensionBlocker.fromPrebuiltAdsAndTracking(fetch).then((blocker) => {
    blocker.enableBlockingInBrowser();
  });

  Electron:

  import { session } from 'electron';
  import fetch from 'cross-fetch'; // or 'node-fetch'
  
  import { ElectronBlocker } from '@cliqz/adblocker-electron';
  
  ElectronBlocker.fromPrebuiltAdsAndTracking(fetch).then((blocker) => {
    blocker.enableBlockingInSession(session.defaultSession);
  });

  Puppeteer:

  import puppeteer from 'puppeteer';
  import fetch from 'cross-fetch'; // or 'node-fetch'
  
  import { PuppeteerBlocker } from '@cliqz/adblocker-puppeteer';
  
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  
  PuppeteerBlocker.fromPrebuiltAdsAndTracking(fetch).then((blocker) => {
    blocker.enableBlockingInPage(page);
  });