feat(plugins/import): add <import> filter support (options.import)

[michael-ciniawsky]

Issues

• Fixes [v1.0.0-alpha (Feature)] support custom URL filters (options.import|options.url)  #158

Notable Changes

import

{Boolean}

webpack.config.js

{
  loader: 'html-loader',
  options: {
    import: false
  }
}

{RegExp}

webpack.config.js

{
  loader: 'html-loader',
  options: {
    import: /filter/
  }
}

{Function}

webpack.config.js

{
  loader: 'html-loader',
  options: {
    import (url) {
      return /filter/.test(url)
    }
  }
}