Update benchmark numbers in README.

Author: scoder

README.rst

@@ -8,43 +8,38 @@ simplicity, accuracy and safety.  Clearly not in terms of speed, though,
 given the cdecimal accelerator in Python 3.3+.
 
 ``quicktions`` is an adaptation of the original ``fractions`` module
-(as included in CPython 3.13a3) that is compiled and optimised with
+(as included in CPython 3.13) that is compiled and optimised with
 `Cython <https://cython.org/>`_ into a fast, native extension module.
 
-Compared to the standard library ``fractions`` module of CPython,
-computations in ``quicktions`` are about
+Compared to the standard library ``fractions`` module of CPython 3.12,
+computations in ``quicktions`` are about 3-4x faster.
 
-- 10x faster in Python 2.7 and 3.4
-- 6x faster in Python 3.5
-- 3-4x faster in Python 3.10
-
-Compared to the ``fractions`` module in CPython 3.10, instantiation of a
-``Fraction`` in ``quicktions`` is also
+Instantiation of a ``Fraction`` in ``quicktions`` is also
 
 - 5-15x faster from a floating point string value (e.g. ``Fraction("123.456789")``)
 - 3-5x faster from a floating point value (e.g. ``Fraction(123.456789)``)
-- 2-4x faster from an integer numerator-denominator pair (e.g. ``Fraction(123, 456)``)
+- 2-5x faster from an integer numerator-denominator pair (e.g. ``Fraction(123, 456)``)
 
 We provide a set of micro-benchmarks here:
 
 https://github.com/scoder/quicktions/tree/master/benchmark
 
-As of quicktions 1.12, the different number types and implementations compare
-as follows in CPython 3.10:
+As of quicktions 1.19, the different number types and implementations compare
+as follows in CPython 3.12 (measured on Ubuntu Linux):
 
 .. code-block::
 
     Average times for all 'create' benchmarks:
-    float               :    36.17 us (1.0x)
-    Decimal             :   111.71 us (3.1x)
-    Fraction            :   111.98 us (3.1x)
-    PyFraction          :   398.80 us (11.0x)
+    float               :    33.55 us (1.0x)
+    Fraction            :   116.02 us (3.5x)
+    Decimal             :   132.22 us (3.9x)
+    PyFraction          :   361.93 us (10.8x)
 
     Average times for all 'compute' benchmarks:
-    float               :     4.53 us (1.0x)
-    Decimal             :    16.62 us (3.7x)
-    Fraction            :    72.91 us (16.1x)
-    PyFraction          :   251.93 us (55.6x)
+    float               :     3.24 us (1.0x)
+    Decimal             :    17.28 us (5.3x)
+    Fraction            :    77.04 us (23.8x)
+    PyFraction          :   166.38 us (51.2x)
 
 While not as fast as the C implemented ``decimal`` module in Python 3,
 ``quicktions`` is about 15x faster than the Python implemented ``decimal``