[fix] improve constructors, make them work with explicit conversion operators in infixes
[fix] improve constructors, make them work with explicit conversion operators in infixes

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