bump version to 0.3; ready for CRAN
bump version to 0.3; ready for CRAN

fboehm/labnotebook,fboehm/labnotebook,antass/labnotebook3,fboehm/labnotebook,fboehm/labnotebook,fboehm/cboettig_site,fboehm/labnotebook,fboehm/cboettig_site,antass/labnotebook3,fboehm/cboettig_site,fboehm/cboettig_site,antass/labnotebook3,fboehm/cboettig_site,fboehm/labnotebook