Major fixes:

- ChunkIterator is now bidirectional
- LineIterator is now also bidirectional
- Undo/redo history operations
- Replace operation
- Range based api functions
- And more minor bug fixes

include/vase/constants.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "pch.h"
+
+constexpr uint32_t APPEND_CHUNK_SIZE = 64 * 1024;
+constexpr uint32_t PETAL_SIZE_MAX = 32 * 1024;
+
+static_assert(
+  APPEND_CHUNK_SIZE > PETAL_SIZE_MAX,
+  "PETAL_SIZE_MAX must be smaller than APPEND_CHUNK_SIZE"
+);