Got rid of easy to type but controversial variable <code>$$</code>. There are issues in
PowerShell V3, bugs or not, Invoke-Build does not use this variable anymore.</p>
<p>As a result, it is recommended to replace automatic variables <code>$$</code> with <code>$2</code> in
all partial incremental task code (if any). This version supports both <code>$2</code>
(new) and <code>$$</code> (deprecated). <code>$$</code> will not be supported in vNext.</p>
<h2>v1.2.6</h2>
<p>Refactoring of tests for decoupling and 