fix(getOptions): deprecation warn in loaderUtils

[joshwiens]

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

• Bugfix

What is the current behavior? (You can also link to an open issue here)

loader-utils throws a deprecation warning

What is the new behavior?

updates from parseQuery to getOptions for loaderUtils

Does this PR introduce a breaking change?

• Yes
• No

If this PR contains a breaking change, please describe the following...

• Impact:
• Migration path for existing applications: None
• Github Issue(s) this is regarding: DeprecationWarning: loaderUtils.parseQuery() received a non-string value which can be problematic #113

Other information:

Closes #113

[codecov]

Codecov Report

Merging #114 into master will not change coverage.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master    #114   +/-   ##
======================================
  Coverage    96.8%   96.8%           
======================================
  Files           2       2           
  Lines          94      94           
  Branches       17      18    +1     
======================================
  Hits           91      91           
  Misses          3       3

Impacted Files	Coverage Δ
index.js	96.42% <100%> (ø)	✅

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[bebraw]

LGTM.