Use __traits(isStaticArray) instead of std.traits wrapper

[nordlow]

No description provided.

[codecov-commenter]

Codecov Report

Merging #358 (687dcf2) into master (22918a5) will not change coverage.
The diff coverage is 100.00%.

❗ Current head 687dcf2 differs from pull request most recent head bc7dbfe. Consider uploading reports for the commit bc7dbfe to get more accurate results

@@           Coverage Diff           @@
##           master     #358   +/-   ##
=======================================
  Coverage   92.64%   92.64%           
=======================================
  Files          62       62           
  Lines       15380    15380           
=======================================
  Hits        14249    14249           
  Misses       1131     1131           

Impacted Files	Coverage Δ
source/mir/appender.d	91.00% <ø> (ø)
source/mir/ndslice/slice.d	97.95% <ø> (ø)
source/mir/array/allocation.d	85.71% <100.00%> (ø)

---

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 22918a5...bc7dbfe. Read the comment docs.