Add the 'time' action

[drroe]

Add the time action for modifying time information in frames.

  [help time]
	{time0 <initial time> dt <step> [update] | remove}
  Add, modify, or remove time information from each frame.
    time0 <initial time> : Time of the first frame (ps).
    dt <step>            : Time step between frames (ps).
    update               : If specified, modify any existing time info.
    remove               : Remove any time info from frame.

Also adds tests for each of these modes and updates the manual.

[drroe]

It's not clear to me from the logs why the parallel Jenkins build failed. Going to try and retrigger.

[drroe]

run jenkins

[drroe]

Figured it out - needed to protect the test in parallel; NetCDF writes in parallel require parallel NetCDF which none of the MPI test rigs currently have. I wonder if I should consider bundling parallel NetCDF with cpptraj.

[drroe]

Appveyor is still queued, but since Travis, Jenkins, and LGTM are happy I'm going to go ahead and merge now.

[swails]

Figured it out - needed to protect the test in parallel; NetCDF writes in parallel require parallel NetCDF which none of the MPI test rigs currently have.

You can always add it to the Dockerfile.

Then the Jenkins builds will have it, regardless of which slave it runs on.