Restructured app

- Moved render and event handling logic to their own functions.
- Fixed rename issue where it could not be undone.
- Fixed issue where images would stop rendering if an event was emitted
  without changing selected item.

build.zig

@@ -2,7 +2,7 @@ const std = @import("std");
 const builtin = @import("builtin");
 
 const min_zig_string = "0.12.0";
-const version = std.SemanticVersion{ .major = 0, .minor = 2, .patch = 0 };
+const version = std.SemanticVersion{ .major = 0, .minor = 3, .patch = 0 };
 
 const targets: []const std.Target.Query = &.{
     .{ .cpu_arch = .aarch64, .os_tag = .macos },

build.zig.zon

@@ -1,6 +1,6 @@
 .{
     .name = "zfe",
-    .version = "0.2.0",
+    .version = "0.3.0",
 
     .minimum_zig_version = "0.12.0",