Scribus 1.6 formula plan

[luzpaz]

Once Scribus v1.6 comes out, update formula and submit scribus.rb to official homebrew repo
The formula should contain a

• --HEAD section
• --without section
• patch section
• test block
• compile specific revisions (enable to compile with specific revisions #11 & Create a 1.5 unstable r20009 formula #14)
• Specify GUI language flag (https://github.com/scribusproject/homebrew-scribus Specify GUI language in Cmake via CLI #5)
• Output appropriate messaging that are more informative (Add Messaging output to scribus formula #4)

Gist in progress:

https://gist.github.com/luzpaz/647414b7470b9e78b851

[luzpaz]

See https://github.com/Homebrew/homebrew-science/blob/master/octave.rb