Update xlsxwriter constraint to allow usage of xlsxwriter 2.0 and 3.0. The latter version includes significant improvements to xlsxwriter's performance.
@@ -33,7 +33,7 @@ install_requires = [
"Willow>=1.4,<1.5",
"requests>=2.11.1,<3.0",
"l18n>=2018.5",
- "xlsxwriter>=1.2.8,<2.0",
+ "xlsxwriter>=1.2.8,<4.0",
"tablib[xls,xlsx]>=0.14.0",
"anyascii>=0.1.5",
"telepath>=0.1.1,<1",