glabels-3.99-master554

Merge branch 'RefactorPrint'

- Modifies printing model to be similar to glabels-3.x.
   - Allow simple projects to print by-the-page (#51)
   - Added collated vs uncollated document merges
- Added ability to separate merge groups by page
- Updated man pages
- Updated misc developer documentation

glabels-3.99-master553

Barcode tweaks.

- Add capability to disable text in glbarcode UPC/EAN barcodes. (#79)
- Add backend name to display text in BarcodeMenuButton.

glabels-3.99-master552

Increase maximum density of 2D barcodes to 64 blocks/in. (#78)

This affects the minimum size of 2D barcodes.  Even though you can print
at this density, it may be problematic depending on printer quality or
scanner optics.

glabels-3.99-master551

Add workaround for non-gui environments to glabels-batch manpage. (#68)

glabels-3.99-master550

Added "Open Recent" button to StartupView.

- Also disabled broken MacOS build in travis CI file

glabels-3.99-master549

Trim leading and trailing spaces from image filenames from merge reco…

glabels-3.99-master548

Allow user variables to be set from glabels-batch command line (#75)

glabels-3.99-master547

CI cleanup/updates

  - Create versioned snapshots
  - include MacOS build -- still needs test and deploy steps
  - include barcode and libqrencode in Linux build
  - include libqrencode in Windows build

  Updated README and TODO files.