TODO
Items in order of importance


CURRENT WORK:

none

NEW FEATURES:

- dialogs!!!! For saving files, opening files, confirming operations,
  specifying layer dimensions, renaming layers and everything else
- IMPORT/EXPORT from/to ansi, etc

- flip strategies (let user decide what characters are to be flipped)
- more intuitive transparent-layer handling (or add more documentation)
- enable smaller layers to be placed anywhere instead of always having
  to be anchored to the top-left corner

- configurable key bindings

