[maven-release-plugin] prepare release PDFCombiner-1.0
Revert "[maven-release-plugin] prepare release PDFCombiner-1.0"

This reverts commit 69cd2c138a83dc4d2fd168a94c41a40bea5819a0.
[maven-release-plugin] prepare release PDFCombiner-1.0
Revert "[maven-release-plugin] prepare release PDFCombiner-1.0"

This reverts commit 2eee30037812c5bf21bf048013807b00d5a0fda4.
Updated SCM config so that releases work better with GitHub