[INTERNAL] SequenceFile: changed read demo to catch ParseError
[INTERNAL] SequenceFile: changed read demo to catch ParseError

Squashed commits:
[7ff254e] [INTERNAL] SequenceFile: used parse exceptions inside fastq reading demo

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