This is the pull request to go along with #258

Description

The task durations in the Build Time Report are cumulative instead of specific to each task.

For the following psake script:

properties {  
}

task default -depends Three

task Three -depends One, Two {
  write-host "Sleeping 1"
  Sleep 1
}

task Two -depends One {
  write-host "Sleeping 2"
  Sleep 2
}

task One {
  write-host "Sleeping 1"
  Sleep 1
}

I would expect the output to be:

----------------------------------------------------------------------
Build Time Report
----------------------------------------------------------------------
Name   Duration
----   --------
One    00:00:01.003
Two    00:00:02.003
Three  00:00:01.003
Total: 00:00:04.020

But the output is:

----------------------------------------------------------------------
Build Time Report
----------------------------------------------------------------------
Name   Duration
----   --------
One    00:00:01.003
Two    00:00:02.002
Three  00:00:04.009
Total: 00:00:04.017

Related Issue

#258

How Has This Been Tested?

I tested this locally and all current pester tests still pass

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.