Added clang-tidy config and cleaned up the code a little.

source/mijin/util/bitarray.hpp

@@ -6,7 +6,6 @@
 
 #include <array>
 #include <atomic>
-#include <cassert>
 #include <cstddef>
 
 namespace mijin
@@ -32,8 +31,9 @@ private:
     using byte_type = std::conditional_t<threadSafe, std::atomic_uint8_t, std::uint8_t>;
     std::array<byte_type, (numBits + 7) / 8> bytes;
 public:
-    [[nodiscard]] bool get(std::size_t index) const {
-        assert(index < numBits);
+    [[nodiscard]] bool get(std::size_t index) const
+    {
+        MIJIN_ASSERT(index < numBits, "BitArray: index out of range.");
         return (bytes[index / 8] & (1 << (index % 8)));
     }
     void set(std::size_t index, bool value)