Compatibility with latest PostCSS

• Compatibility with latest PostCSS

Updated postcss dependency

1.4.0

Bump version (1.4.0)

Replace `path.resolve` with `path.join` for image lookups

NOTE: This might change the way your images are loaded, but most likely this is not a problem. Actually it might solve problem you may have been experiencing.

Inline mode not rewrites file if it is exists

1.2.3

Bump version

Prepend the `fallbackSelector` to all selectors of a rule

Thanks @Kreozot

Fixed regular expression for data URLs

Comma can be a delimiter as well as semicolon.

Thanks @Kreozot, @Ser-Gen

1.2.0: Add support for inline SVG

- Support for inline SVG files with `url(data:..svg data..)`

- Fixes #8

1.1.0: Add options to disable converting SVG images

- This is useful for when you have an alternative system to convert your
  images, but do what to change the CSS

- Fixes #6

1.0.2

Bump version

1.0.1: Add `source` property for newly created nodes

- From the PostCSS Plugins Guidelines:
    2.3. Set correct source property for each created nodes.

Fixes #4