New features

• Add W3C/Event properties : AttendanceMode, EventStatus and LocationType
• Add pagination support
• Accurate localization for data/time
• Add wrappers to date/time in multi days events
• add filter to class on button on cal

Fixes:

• Fix values not kept for checkboxes in editor
• Force single view map height
• add custom taxonomy to cal shortcode
• Do not load gutenberg library on front
• refactor JS/CSS file. manage all in webpack for minification
• fix wrong path on filemtime in case of plugin notbeing in plugin dir physically
• larger select for time in datepicker
• remove unused french po/mo files
• Cleaup SVN repo