version bump

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.24)
 project(dice-sparse-map
-        VERSION 0.2.7
+        VERSION 0.2.8
         DESCRIPTION "C++ implementation of a memory efficient hash map and hash set based on [tsl::sparse_map](https://github.com/Tessil/sparse-map). We added support for fancy pointers.")
 set(POBR_VERSION 1)  # Persisted Object Binary Representation Version