[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare for next development iteration

git-svn-id: c3ad59981690829a43dc34c293c4e2cd04bcd994@908967 13f79535-47bb-0310-9956-ffa450edef68

benmccann/pdfbox,BezrukovM/veraPDF-pdfbox,torakiki/sambox,torakiki/sambox,gavanx/pdflearn,joansmith/pdfbox,ChunghwaTelecom/pdfbox,benmccann/pdfbox,BezrukovM/veraPDF-pdfbox,mathieufortin01/pdfbox,gavanx/pdflearn,mdamt/pdfbox,veraPDF/veraPDF-pdfbox,ChunghwaTelecom/pdfbox,joansmith/pdfbox,mdamt/pdfbox,veraPDF/veraPDF-pdfbox,ZhenyaM/veraPDF-pdfbox,mathieufortin01/pdfbox,ZhenyaM/veraPDF-pdfbox