Bug fix for ami recipe

[jimbozhang]

Avoid generating extremely long segments. #83

[codecov-commenter]

Codecov Report

Merging #85 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #85   +/-   ##
=======================================
  Coverage   93.16%   93.16%           
=======================================
  Files          37       37           
  Lines        2838     2838           
=======================================
  Hits         2644     2644           
  Misses        194      194           

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[pzelasko]

How does this affect the output of prepare_ami? Can you put a comment in the code explaining the changes?

[jimbozhang]

How does this affect the output of prepare_ami? Can you put a comment in the code explaining the changes?

I made a new commit, in which the codes are cleaned and some comments are added. There are some bad cases in AMI's annotation file, and this PR deals with those bad cases. @pzelasko

[pzelasko]

Thanks!