tmp: work towards making README.md example compile

README.md

@@ -8,7 +8,7 @@ As an example:
 ```zig
 const std = @import("std");
 const expectEqual = std.testing.expectEqual;
-const HashArrayMappedTrie = @import("hamt");
+const HashArrayMappedTrie = @import("hamt").HashArrayMappedTrie ;
 
 const StringTrie = HashArrayMappedTrie([]const u8, void, StringContext);
 

src/trie.zig

@@ -21,7 +21,7 @@ pub fn HashArrayMappedTrie(comptime K: type, comptime V: type, comptime Context:
 
         const Node = union(enum) { kv: Pair, table: Table };
         const Table = struct { map: Digest = 0, base: [*]Node };
-        const Pair = struct { key: K, value: V };
+        pub const Pair = struct { key: K, value: V };
 
         pub fn init() Self {
             return Self{ .root = [_]?*Node{null} ** table_size };