[FIX] revert changes to concat function and mark as deprecated; add write() with delimiter and remove existing boilerplate code
[FIX] revert changes to concat function and mark as deprecated; add write() with delimiter and remove existing boilerplate code

PF2-pasteur-fr/seqan,JohnReid/seqan,bayolau/seqan,limeng12/seqan,budach/seqan,catkira/seqan,JohnReid/seqan,JohnReid/seqan,xp3i4/seqan,catkira/seqan,catkira/seqan,ktrappe/seqan,bayolau/seqan,xenigmax/seqan,budach/seqan,limeng12/seqan,PF2-pasteur-fr/seqan,bayolau/seqan,PF2-pasteur-fr/seqan,ktrappe/seqan,bayolau/seqan,budach/seqan,PF2-pasteur-fr/seqan,JohnReid/seqan,budach/seqan,ktrappe/seqan,ktrappe/seqan,bayolau/seqan,xp3i4/seqan,limeng12/seqan,bestrauc/seqan,JohnReid/seqan,xp3i4/seqan,bestrauc/seqan,PF2-pasteur-fr/seqan,hannespetur/SeqAnHTS,limeng12/seqan,xenigmax/seqan,ktrappe/seqan,bestrauc/seqan,ktrappe/seqan,hannespetur/SeqAnHTS,hannespetur/SeqAnHTS,catkira/seqan,bayolau/seqan,xenigmax/seqan,hannespetur/SeqAnHTS,limeng12/seqan,budach/seqan,budach/seqan,bestrauc/seqan,ktrappe/seqan,bayolau/seqan,hannespetur/SeqAnHTS,PF2-pasteur-fr/seqan,xp3i4/seqan,limeng12/seqan,xp3i4/seqan,xp3i4/seqan,hannespetur/SeqAnHTS,bestrauc/seqan,ktrappe/seqan,limeng12/seqan,PF2-pasteur-fr/seqan,xp3i4/seqan,xenigmax/seqan,catkira/seqan,bestrauc/seqan,JohnReid/seqan,JohnReid/seqan,budach/seqan,xenigmax/seqan,hannespetur/SeqAnHTS,hannespetur/SeqAnHTS,bayolau/seqan,catkira/seqan,budach/seqan,catkira/seqan,catkira/seqan,xenigmax/seqan,limeng12/seqan,bestrauc/seqan,budach/seqan,hannespetur/SeqAnHTS,bestrauc/seqan,PF2-pasteur-fr/seqan,limeng12/seqan,xp3i4/seqan,xenigmax/seqan,xp3i4/seqan,PF2-pasteur-fr/seqan,catkira/seqan,bayolau/seqan,JohnReid/seqan,ktrappe/seqan,xenigmax/seqan,JohnReid/seqan