Closes #129: Windows+Composer install fails due to "path too long"
Updated cache serial number
Changes documented.
Version number updagted.
Blog post about release 2.0.3 added.
Issue in cli version code fixed.
Revert "Blog post about release 2.0.3 added."

This reverts commit 4e70b0094f6d41f624185d17a55a32c401e2451b.
Issue in version number handling fixed.
Blog post about release 2.0.3 added.