Synteny rendering may be slightly inaccurate

[cmdcolin]

See https://s3.amazonaws.com/jbrowse.org/code/jb2/main/?config=test_data%2Fyeast_synteny%2Fconfig.json&session=share-tJt2GX2rkK&password=dUSfs

I think the alignments juncture should be at exactly the boundary of CP006421 and CP005470 (e.g. bright green marker) but instead they are a little off (e.g. bright red marker)

The two rows from this are

I believe the two rows that make up the "juncture" here are these from https://s3.amazonaws.com/jbrowse.org/genomes/yeast/YJM1447_vs_R64.paf

CP006421.1  1556556 1497164 1556547 + BK006945.2  1078177 1003601 1062357 52563 59436 60  tp:A:P  cm:i:4992 s1:i:52418  s2:i:2096 dv:f:0.0085 rl:i:150 
CP005470.2  895110  10  176381  + BK006946.2  924431  7844  184159  159014  176893  60  tp:A:P  cm:i:15316  s1:i:158796 s2:i:359  dv:f:0.0076 rl:i:408 

There is no real way for a single alignment to "cross" the boundary between refseqs hence, probably the rendering is inaccurate

[cmdcolin]

Note that this issue inspired creating #1894 so that we can inspect the raw data for this visualization instead of manually finding the lines in the PAF that might produce what is seen