Fixes #899 - Repeated elements with no assigned key are not added to lookup when rendered on the server

[patrick-steele-idem]

No description provided.

[codecov]

Codecov Report

Merging #900 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #900      +/-   ##
==========================================
- Coverage   90.28%   90.28%   -0.01%     
==========================================
  Files         311      311              
  Lines       11320    11319       -1     
==========================================
- Hits        10220    10219       -1     
  Misses       1100     1100

Impacted Files	Coverage Δ
src/morphdom/index.js	92.57% <100%> (-0.04%)	⬇️

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[codecov]

Codecov Report

Merging #900 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #900      +/-   ##
==========================================
- Coverage   90.28%   90.28%   -0.01%     
==========================================
  Files         311      311              
  Lines       11320    11319       -1     
==========================================
- Hits        10220    10219       -1     
  Misses       1100     1100

Impacted Files	Coverage Δ
src/morphdom/index.js	92.57% <100%> (-0.04%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update e9db1d6...9208d8d. Read the comment docs.

[coveralls]

Coverage decreased (-0.0009%) to 90.282% when pulling 9208d8d on issue-899 into e9db1d6 on master.