 invoke all independent
tasks, i.e. all tasks starting with roots. This is very useful for scripts with
test tasks, one does not have to have a master task that calls all the others.
Besides, <code>*</code> ensures that there is no test not called by mistake.</p>
<p>Thus, some obsolete/redundant tasks were removed from scripts in <em>Demo</em>.</p>
<p>New <em>Invoke-Build</em> parameter <em>Hook</em> for extensions. The only hook for now is
<em>GetFile</em> which is used by <em>Build.ps1</em>. <em>Get-Build