Bug Fixes:
Bug 763951 - libedata-book: Handle an error return from e_sexp_parse() (Philip Withnall)
Bug 764027 - [CalDAV] Use timezone location as tzid for iCloud.com (Milan Crha)
Bug 763670 - [IMAPx] Silently ignore G_TLS_ERROR_EOF (Milan Crha)
Bug 764172 - [IMAPx] Load folder summary into memory before sync/fetch (Milan Crha)
Bug 764434 - Set Accept-Language header for libsoup sessions (Michael Kuhn)
Bug 764307 - [IMAPx] Use NOTIFY only if supported and IDLE enabled (Milan Crha)
Miscellaneous:
Fix memory leak in error paths in EBookBackendSqliteDB::sexp_to_sql_query() (Milan Crha)
[IMAPx] Do not change Sent folder for GMail in initial setup (Milan Crha)
[IMAPx] Cleanup busy/idle hashes on connect/disconnect (Milan Crha)
[IMAPx] Report message flag change only if really changed (Milan Crha)
[IMAPx] Add thread-safety locking around server's private 'changes' property (Milan Crha)
[IMAPx] Retry the operation only if an old connection fails (Milan Crha)
[CalDAV] Instead of query for UID, try to get the object directly (Milan Crha)
