1.19.1 2017-03-30
       - Fixed deprecated warning

1.19.0 2015-11-20
       - Fonts file was separated in rbpdf-font.gem.
       - Fonts utils were updated.
           Linux binaries were added on lib/fonts/utils
           makefont.rb was update.(replaced by makefontuni_ruby.php)
           makeallttffonts.rb added.
       - DejaVu fonts were updated to latest version.(2.33 -> 2.35)
           DejaVu SansMono, DejaVu Serif fonts was added.

