v0.1.3

• major bug fix for linear barcodes that occassionally created unscannable barcodes.
• added documentation on how to create alternative formatting of labels (e.g. spaces, line breaks)
• added padding for labels which were single character or blank
• 2-page cheatsheet now available as addin

Special thanks to GitHub user 'thokall' for outstanding work tracking down and fixing the bug in our linear bar(code)^2