some new features

.venv/lib/python3.12/site-packages/Cython/Includes/libc/limits.pxd

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+# 5.2.4.2.1 Sizes of integer types <limits.h>
+
+cdef extern from "<limits.h>":
+    const int CHAR_BIT
+    const int MB_LEN_MAX
+
+    const char CHAR_MIN
+    const char CHAR_MAX
+
+    const signed char SCHAR_MIN
+    const signed char SCHAR_MAX
+    const unsigned char UCHAR_MAX
+
+    const short SHRT_MIN
+    const short SHRT_MAX
+    const unsigned short USHRT_MAX
+
+    const int INT_MIN
+    const int INT_MAX
+    const unsigned int UINT_MAX
+
+    const long LONG_MIN
+    const long LONG_MAX
+    const unsigned long ULONG_MAX
+
+    const long long LLONG_MIN
+    const long long LLONG_MAX
+    const unsigned long long ULLONG_MAX