Added a namespace argument to publishLines().

[olzhas]

Hey guys,

I found it useful for my project to have namespace as an extra argument for publishLines() method. I hope it does not break anything.

[codecov]

Codecov Report

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@@            Coverage Diff            @@
##             master     #169   +/-   ##
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  Coverage          ?   19.73%           
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  Files             ?        5           
  Lines             ?     1708           
  Branches          ?        0           
=========================================
  Hits              ?      337           
  Misses            ?     1371           
  Partials          ?        0           

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