v0.5.0

[0.5.0] - 2020-06-28

Introduce the ability to open Gopher menu items with an external application
by associating commands with specific item types.

Add

• General configuration infrastructure for managing Waffle's current
  open.ini configuration, as well as future configurations, all residing
  in ~/.config/waffle/
• Default open.ini in data/
• UI for editing which command opens an item type (ctrl+c to bring up UI,
  ctrl+s to save changes), which manipulates the corresponding config stored
  at ~/.config/waffle/open.ini
• Instructions in the help screen for the new open feature
• Introduce AnyName which is a Brick name that encompasses all names as
  a "sum type"
• A progress handler (initOpenMode, progressOpen) for downloading and
  then opening the download with the associated command
• Open certain menu items with a command using ctrl+o
• Representations for open config stuff, including helper functions

Change

• Pretty much all instances of MyName to use the new AnyName (which MyName
  is now a constructor of)