do not impose minimum chromosome count in karyotype (thanks @bitahu, #783) (#784)

Author: tanghaibao

src/jcvi/graphics/karyotype.py

@@ -19,7 +19,6 @@
 e, 0, 1, athaliana.grape.4x1.simple
 """
 
-
 import sys
 from typing import List, Optional
 
@@ -236,8 +235,6 @@ def draw(
             step = 2 if nseqids <= 40 else 10
             if nseqids >= 2 * MaxSeqids and (i + 1) % step != 0:
                 continue
-            if nseqids < 5:
-                continue
 
             hpad = -pad if va == "bottom" else pad
             if plot_circles: