New plugin with autoprefixer warnings

[Michael Petrinolis]

I'm submitting a bug report

• Library Version:
  1.0.0

Please tell us about your environment:

• Operating System:
  Windows [10]

• Node Version:
  v10.15.3

• NPM Version:
  6.2.0

• Browser:
  all

• Language:
  TypeScript

• Loader/bundler:
  Webpack

Current behavior:
when run npm build we get error/warning
Replace Autoprefixer browsers option to Browserslist config.
Use browserslist key in package.json or .browserslistrc file.

in process-css.ts autoprefixer is called with {browsers: ['last 2 version']} in options, which is obsolete. There should be a .broserslistrc file or a
"browserslist": [
"defaults"
] entry in package.json

• What is the expected behavior?
  npm build should run without error/warnings

• What is the motivation / use case for changing the behavior?
  to work as expected with autoprefixer