Version 0.28

Released July 3, 2023

• Add special holidays categories support (#1347 by @KJhellico)
• Introduce holiday categories support (#1320 by @KJhellico)
• Fix Marshall Islands tests warning (#1354 by @KJhellico)
• Fix common::TestCase methods (#1324 by @KJhellico)
• Optimize .py files formatting (#1332 by @KJhellico)
• Optimize .py files formatting (tests) (#1337 by @KJhellico)
• Update Baltic countries holidays, add l10n support (#1340 by @KJhellico)
• Update Bosnia and Herzegovina holidays, add l10n support (#1336 by @KJhellico)
• Update PR template (#1330 by @arkid15r)
• Update configuration files (#1327 by @arkid15r)
• Add HolidayBase methods for relative weekdays calculation (#1334 by @KJhellico)
• Clean up calendars (#1349 by @arkid15r)
• Drop Python 3.7 support (#1326 by @arkid15r)
• Migrate Ireland holidays to holiday groups (#1333 by @KJhellico)
• Migrate Madagascar to holiday groups, add l10n support (#1335 by @KJhellico)
• Migrate Malta to holiday_groups, add l10n support (#1338 by @PPsyrius, @arkid15r)
• Migrate Marshall Islands to holiday_groups (#1342 by @PPsyrius)
• Migrate United States holidays to holiday groups and subdivision holidays methods (#1331 by @KJhellico)
• Remove redundant #noqa E501 labels (#1322 by @PPsyrius)