- update to 3.1.3:
* #1401 Column name caches are slow and use a lot of memory
* #1457 Improved handling of duplicate named styles
* #1842 Rich-text can be saved if lxml is not installed
* #1954 Documentation for sheet views is incorrect
* #1973 Timedeltas not read properly in read-only mode
* #1987 List of formulae names contains mistakes
* #1967 Filters does not handle non-numerical filters
* #2054 Type checking increases exponentially
* #2057 Loading pivot tables can be unnecessarily slow
* #2102 Improve performance when reading files with lots of
custom properties
* #2106 Setting Trendline.name attribute raises exception when
saving
* #2120 Timezone and Zombie formatting cannot be combined.
* #2107 Column name generation is inefficient and slow
* #2122 File handlers not always released in read-only mode
* #2149 Workbook files not properly closed on Python ≥ 3.11.8
and Windows
* #2161 Pivot cache definitions using tupleCache had
serialisation issues