Log Message:
libical: update to 3.0.3

Version 3.0.3:
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 * VTODO COMPLETED property can be a DATE-TIME or DATE (for backward compatibility)
 * Improved recurrence iteration

Version 3.0.2:
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 * No longer attempt to detect the need for -DUSE_32BIT_TIME_T with MSVC
 * New CMake option ICAL_BUILD_DOCS which can be used to disable the docs target
 * Fix threading hang in BSD type systems (OpenBSD, MacOS,...)
 * Build with Ninja improvements

Version 3.0.1:
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 * Built-in timezones updated to tzdata2017c
 * Fix a multi-threaded deadlock in icaltimezone_load_builtin_timezone()
 * Fix a CMake problem with parallel builds

Version 3.0.0:
--------------
 * Relicense from MPL 1.0 to MPL 2.0 (keep dual license for LGPL v2.1)
 * Requires CMake v3.1.0 or higher along with various CMake and buildsystem fixes
 * Added a 'make uninstall'
 * Fixed use-after-free issues and some memory leaks
 * Built-in timezones updated to tzdata2017b
 * More accurate VTIMEZONE generation when using the system time zone data (when
   USE_BUILTIN_TZDATA=False)
 * icalvalue_as_ical_string() returns "TRUE" (non-zero) or \ 
"FALSE" (zero) values only.
 * New icalvalue.h convenience macros: ICAL_BOOLEAN_TRUE and ICAL_BOOLEAN_FALSE
 * Better value type checking of property values when parsing
 * icalvalue_new/set_date and icalvalue_new/set_datetime now enforce DATE and \ 
DATE-TIME
   values respectively
 * draft-ietf-calext-extensions (RFC 7986) support added
 * Parameter values are now en/decoded per RFC 6868
 * Removed is_utc from icaltimetype struct
    * Set icaltimetype.zone to icaltimezone_get_utc_timezone() to change a time \ 
to UTC
    * Use icaltime_is_utc() to check if a time is in UTC
 * Added support for VPATCH component
 * New publicly available functions:
     + icalproperty_set_parent (icalproperty_get_parent was already public)
     + icalvalue_get_parent (icalvalue_set_parent was already public)
     + icalparameter_set_parent
     + icalparameter_get_parent
     + icalvalue_new_datetimedate (DATE or DATE-TIME)
     + icalvalue_set_datetimedate
     + icalvalue_get_datetimedate
     + icalrecur_iterator_set_start
     + icalcomponent_normalize()
     + icalproperty_normalize()
 * Removed deprecated functions:
    + icaltime_from_timet (use icaltime_from_timet_with_zone)
    + icaltime_start_day_of_week (use icaltime_start_day_week)
    + icalproperty_remove_parameter (use icalproperty_remove_parameter_by_kind)
    + icalproperty_string_to_enum (use icalproperty_kind_and_string_to_enum)
 * Signature changed for functions:
    + VObject *Parse_MIME_FromFileName(const char *fname)
    + icalgauge *icalgauge_new_from_sql(const char *sql, int expand)
    + const char *icallangbind_property_eval_string(icalproperty *prop, const \ 
char *sep)
    + const char *icallangbind_property_eval_string_r(icalproperty *prop, const \ 
char *sep)
    + void set_zone_directory(const char *path)
    + icalcalendar *icalcalendar_new(const char *dir)
    + int icalrecur_expand_recurrence(const char *rule, time_t start, int count, \ 
time_t *array)

Version 2.0.0:
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 * WARNING: Version 2 IS NOT Binary Compatible with Older Versions
 * Version 2 is Source Compatible with Older Versions
 * Lots of source code scrubbing
 * [New] RSCALE support (requires libicu from http://www.icu-project.org)
 * [New] CalDAV attachment support (draft-ietf-calext-caldav-attachments)
 * [New] Resurrect the Berkeley DB storage support
 * [Bug] issue83: Incorrect recurrence generation for weekly pattern
 * Handle RRULEs better
 * Handle threading better