Describe performance improvements.

Author: JamesParrott

README.md

@@ -98,15 +98,18 @@ part of your geospatial project.
 ### Breaking Changes:
 - Python 2 and Python 3.8 support dropped.
 - Field info tuple is now a namedtuple (Field) instead of a list.
-- Field type codes are now FieldType enum members.
+- Field type codes are now FieldType 'enum' members.
 - bbox, mbox and zbox attributes are all new Namedtuples.
-- Writer does not mutate shapes.
+- Writer does not mutate Shapes.
 - New custom subclasses for each shape type: Null, Multipatch, Point, Polyline,
   Multipoint, and Polygon, plus the latter 4's M and Z variants (Reader and
   Writer are still compatible with their base class, Shape, as before).
 - Shape sub classes are creatable from, and serializable to bytes streams,
   as per the shapefile spec.
 
+### Improvements:
+- Speeded up writing shapefiles by up to another ~27% (on top of the recent ~39% improvement in 2.4.1).
+
 ### Code quality
 - Statically typed, and checked with Mypy
 - Checked with Ruff.

changelog.txt

@@ -4,9 +4,9 @@ VERSION 3.0.0-alpha
 	Breaking Changes:
 	* Python 2 and Python 3.8 support dropped.
 	* Field info tuple is now a namedtuple (Field) instead of a list.
-	* Field type codes are now FieldType enum members.
+	* Field type codes are now FieldType 'enum' members.
 	* bbox, mbox and zbox attributes are all new Namedtuples.
-	* Writer does not mutate shapes.
+	* Writer does not mutate Shapes.
 	* New custom subclasses for each shape type: Null, Multipatch, Point, Polyline,
 	  Multipoint, and Polygon, plus the latter 4's M and Z variants (Reader and
 	  Writer are still compatible with their base class, Shape, as before).
@@ -24,6 +24,9 @@ VERSION 3.0.0-alpha
 	* pyproject.toml src layout
 	* Slow test marked.
 
+	Improvements:
+	* Speeded up writing shapefiles by up to another ~27% (on top of the recent ~39% improvement in 2.4.1).
+
 
 VERSION 2.4.1