n.d. is special. Treat such dates special

[GlazerMann]

Do not remove period and such

[codecov]

Codecov Report

Merging #825 into master will increase coverage by 3.71%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #825      +/-   ##
============================================
+ Coverage     69.36%   73.07%   +3.71%     
- Complexity     1612     1898     +286     
============================================
  Files            13       13              
  Lines          3391     4055     +664     
============================================
+ Hits           2352     2963     +611     
- Misses         1039     1092      +53

Impacted Files	Coverage Δ	Complexity Δ
Template.php	79.47% <100%> (+2.27%)	1716 <0> (+286)	⬆️
expandFns.php	91.3% <0%> (+1.02%)	0% <0%> (ø)	⬇️
api_handlers/zotero.php	58.73% <0%> (+58.73%)	0% <0%> (ø)	⬇️

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