Add ColorTheme::Util, moved from Text::ANSITable::ColorThemeUtil
Add Role::{BorderStyle,ColorTheme,TermAttrs} (extracted from Text::ANSITable)
Release v0.57
Add color retrieval/conversion methods to Role::ColorTheme (extracted from Text::ANSITable), specify that color code can be a hash {fg=>..., bg=>..., ansi_fg=>..., ansi_bg=>...}; Add get_border_char to Role::BorderStyle from Text::ANSITable
Bugfix: forgot to add arguments
Release v0.58