New features

• [web] new images viewer in Mail module
• [web] create list from selected cards (#3561)
• [eas] initial EAS v16 and email drafts support
• [core] load-testing scripts to evaluate SOGo performance

Enhancements

• [core] now possible to {un}subscribe to folders using sogo-tool
• [web] AngularJS optimizations in Mail module
• [web] AngularJS optimization of color picker
• [web] improve display of tasks status
• [web] added custom fields support from Thunderbird's address book
• [web] added Latvian (lv) translation - thanks to Juris Balandis
• [web] expose user's defaults and settings inline
• [web] can now discard incoming mails during vacation
• [web] support both backspace and delete keys in Mail and Contacts modules
• [web] improved display of appointment/task comments and card notes
• [web] updated Angular Material to version 1.1.4
• [web] updated CKEditor to version 4.7.1

Bug fixes

• [web] respect SOGoLanguage and SOGoSupportedLanguages (#4169)
• [web] fixed adding list members with multiple email addresses
• [web] fixed responsive condition of login page (960px to 1023px)
• [web] don't throw errors when accessing nonexistent special mailboxes (#4177)
• [core] newly subscribed calendars are excluded from freebusy (#3354)
• [core] don't update subscriptions when owner is not the active user (#3988)
• [core] strip cr during LDIF import process (#4172)
• [core] email alarms are sent too many times (#4100)
• [core] enable S/MIME even when using GNU TLS (#4201)
• [core] silence verbose output for sogo-ealarms-notify (#4170)
• [eas] don't include task folders if we hide them in SOGo (#4164)