3d: implementing plotting of transformed lines (https://github.com/sagemath/cloud/issues/24)
3d: implementing plotting of transformed lines (https://github.com/sagemath/cloud/issues/24)

DrXyzzy/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,tscholl2/smc,sagemathinc/smc,sagemathinc/smc,DrXyzzy/smc,tscholl2/smc,sagemathinc/smc,DrXyzzy/smc,tscholl2/smc,DrXyzzy/smc