Fix #200. Fix support for scalar np.bool_

[rly]

Fix #200. Fix support and tests for scalar np.bool_

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (dev@42026c5). Click here to learn what that means.
The diff coverage is 66.66%.

@@          Coverage Diff           @@
##             dev     #203   +/-   ##
======================================
  Coverage       ?   70.33%           
======================================
  Files          ?       30           
  Lines          ?     5956           
  Branches       ?     1399           
======================================
  Hits           ?     4189           
  Misses         ?     1329           
  Partials       ?      438

Impacted Files	Coverage Δ
src/hdmf/utils.py	89.7% <66.66%> (ø)

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