Merge pull request #1175 from mike42/development

Changes for release v4.0

Merge pull request #803 from mike42/development

Changes for release v3.0

Merge pull request #801 from mike42/development

Changes for release v2.2

Merge pull request #699 from mike42/new-printers

Add newly tested printers to list

Merge pull request #600 from mike42/development

Changes for release 2.0.2

Merge pull request #546 from mike42/development

Changes for release 2.0.1

Merge pull request #538 from mike42/development

Changes for release 2.0

Merge pull request #459 from mike42/development

Changes for release 1.6

Merge pull request #459 from mike42/development

Changes for release 1.6

Merge pull request #363 from mike42/development

Changes for release 1.5.2