Enhancement: Ensure print() is idempotent

[localheinz]

This PR

• ignore whitespace outside of string literals in original to ensure Printer::print() is idempotent

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@ad702b6). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master      #12   +/-   ##
=========================================
  Coverage          ?   96.49%           
  Complexity        ?       28           
=========================================
  Files             ?        1           
  Lines             ?       57           
  Branches          ?        0           
=========================================
  Hits              ?       55           
  Misses            ?        2           
  Partials          ?        0

Impacted Files	Coverage Δ	Complexity Δ
src/Printer.php	96.49% <100%> (ø)	28 <0> (?)

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