New/add spider chi_ssa_35 and it's test case#991

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sosolidkk wants to merge 6 commits intoCity-Bureau:mainfrom sosolidkk:568-spider-chi_ssa_35

+981

Commits on Nov 29, 2020

add spider chi_ssa_35 and it's test case
sosolidkk
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Commits on Jan 10, 2021

Commits on Feb 17, 2021

Commits on Mar 2, 2021

Remove unecessary for loop and add return to make functions more explicit
sosolidkk
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