Cut allocations in padindex

[BioTurboNick]

padindex results in a large number of allocations due to multiple array creations and concatenations. This PR only creates a single array and values are copied into it.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.86%. Comparing base (e92b73d) to head (f77d306).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #277      +/-   ##
==========================================
+ Coverage   91.81%   91.86%   +0.04%     
==========================================
  Files          12       12              
  Lines        1662     1672      +10     
==========================================
+ Hits         1526     1536      +10     
  Misses        136      136              

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[BioTurboNick]

I believe the test failure is unrelated?

[ViralBShah]

Should we merge? Do you have merge rights? If not, I can add you to help here.

[BioTurboNick]

Hi, I don't have merge rights currently, so that would be nice.

[ViralBShah]

Sent invitation.

[BioTurboNick]

I will merge at the end of the week if I don't hear an objection. I can also bump the version if it's otherwise ready for a patch release.

[ViralBShah]

I just made a release yesterday - so this should be straightforward to merge and make a new release.