Progress report doesn't take into account plotting time and efficiency calculation.

Using the progress_bar branch:

In a test with 5 scans, it reported 100% progress after these 5 things:

[BeamPatterns keyId = 23286]
[BeamPatterns keyId = 23287]
[BeamPatterns keyId = 23288]
[BeamPatterns keyId = 23289]
[BeamPatterns keyId = 23290]

but then went on to do this:

Plotting:
 - POL0 - Copol - Near-Field
 - POL0 - Copol - Far-Field From Near-Field
Plotting:
 - POL0 - Xpol - Near-Field
 - POL0 - Xpol - Far-Field From Near-Field
Plotting:
 - POL1 - Copol - Near-Field
 - POL1 - Copol - Far-Field From Near-Field
Plotting:
 - POL1 - Xpol - Near-Field
 - POL1 - Xpol - Far-Field From Near-Field
Plotting:
 - POL0 - Copol180 - Near-Field
 - POL0 - Copol180 - Far-Field From Near-Field
 --- Scanset #1: 211.0[GHz]---
        Angles used: (2.3528, -0.9161)
        Pol0 Efficiencies:
         - Phase Center[mm] = [   2.96    -0.527 -495.716]
         - Phase        [%] = 99.2577
         - Spillover    [%] = 91.6413
         - Taper        [%] = 91.6647
         - Illumination [%] = 84.0027
         - Polarization [%] = 98.9499
         - Defocus      [%] = 99.9850
         - Total        [%] = 82.4913
         - Beam Center[deg] = [ 2.469 -0.736]
        Pol1 Efficiencies:
         - Phase Center[mm] = [   6.677    3.579 -485.363]
         - Phase        [%] = 99.0586
         - Spillover    [%] = 90.7450
         - Taper        [%] = 89.3775
         - Illumination [%] = 81.1056
         - Polarization [%] = 98.4289
         - Defocus      [%] = 99.9850
         - Total        [%] = 79.0679
         - Beam Center[deg] = [ 2.353 -1.351]
        180 Phase Center[mm] = [   3.192    6.753 -473.295]
        Squint     [arcsec] = 1.2555
        Squint      [%FWHM] = 4.3662

For a test with lots more scans, this last part could take quite a bit of time.