v2.6.0: Merge pull request #531 from kbknapp/issues-451,516

v2.6.0 (2016-06-14)

Improvements

• removes extra newline from help output (86e61d19)
• allows printing version to any io::Write object (921f5f79)
• removes extra newline when printing version (7e2e2cbb)
• Aliases: improves readability of asliases in help messages (ca511de7, closes #526, #529)
• Usage Strings: improves the default usage string when only a single positional arg is present (ec86f2da, closes #518)

Features

• Help: allows wrapping at specified term width (Even on Windows!) (1761dc0d, closes #451)
• Settings:
  • adds new setting to stop delimiting values with -- or TrailingVarArg (fc3e0f5a, closes #511)
  • one can now set an AppSetting which is propogated down through child subcommands (e2341835, closes #519)
• Subcommands: adds support for visible aliases (7b10e7f8, closes #522)

Bug Fixes

• fixes bug where args are printed out of order with templates (05abb534)
• fixes bug where one can't override version or help flags (90d7d6a2, closes #514)
• fixes issue where before_help wasn't printed (b3faff60)
• Help: App::before_help and App::after_help now correctly wrap (1f4da767, closes #516)
• Settings: fixes bug where new color settings couldn't be converted from strs (706a7c11)
• Subcommands: subcommands with aliases now display help of the aliased subcommand (5354d14b, closes #521)
• Windows: fixes a failing windows build (01e7dfd6)
• YAML: adds missing YAML methods for App and Arg (e468faf3, closes #528)