v1.6.0

This new version improves the import/compress process making all files available including fragments' thumbnails and all possible options we may add in the future.

• Simplify compress process (now it accepts any content inside the project)
• Make import process use zip files instead of raw API imports.
  This still fallbacks to the old API if zip import is not available (see brianchandotcom/liferay-portal#84118)