TODO

- BUG: I think it doesn't work with A-A game 1 properly
- FET: using yellow color for marking is not very nice
- FET: Add branching hint
- BUG: hard-coded board size
- FET: automatically detect comment encoding
- BUG: When there is a very long comment, the doc window is scrolled to the bottom
- BUG: If there is markers node between move nodes, reverse navigation wouldn't work
- BUG: open sgf, do nothing but closing the window -> segfault
- BUG: often crashes on closing.
- FET: Display move number
- FET: Support SGF from goproblems. They include AB, AW in the first node.
- FET: editor
- FET: automatically detects and display number of stone.
- FET GUI: branch indicator
- BUG: after branching, the current stone marker isn't removed
- BUG: FET: the adapters should be chainable.
- BUG: rangziqi problem
- BUG: problem with place.sgf