Add a generic text-prompt system

Add a generic text-prompt system to the Game, and use it to prompt the
character for their name on startup. There's also a Promise type in
util, which is used for the result of the prompt.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/util/mod.rs b/src/util/mod.rs
index c2b4eecaf5f4..c55fdfeae2b4 100644
--- a/src/util/mod.rs
+++ b/src/util/mod.rs
@@ -2,3 +2,4 @@
 pub mod static_cfg;
 #[macro_use]
 pub mod template;
+pub mod promise;