bug: between breaks if RDATE is an interval

Describe the bug

between breaks if RDATE is an interval. I'm not sure if it is an issues with dateutil or recurring events.

To Reproduce

import datetime
import recurring_ical_events
import pytz

today = datetime.datetime.now(pytz.timezone("America/Vancouver")).date()
future = today + datetime.timedelta(days=365)
for event in cal_i.walk("VEVENT") + cal_i.walk("VFREEBUSY"):
    if event.has_key('RDATE'):
        if (event.has_key('RDATE')):
            recurring_ical_events.of(event).between(today - datetime.timedelta(days=60), future)

ICS file

BEGIN:VCALENDAR
VERSION:2.0
X-WR-CALNAME;VALUE=TEXT:Test RDATE
BEGIN:VTIMEZONE
TZID:America/Vancouver
BEGIN:STANDARD
DTSTART:20221106T020000
TZOFFSETFROM:-0700
TZOFFSETTO:-0800
RDATE:20231105T020000
TZNAME:PST
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20230312T020000
TZOFFSETFROM:-0800
TZOFFSETTO:-0700
RDATE:20240310T020000
TZNAME:PDT
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:1
DESCRIPTION:Test RDATE
DTSTART;TZID=America/Vancouver:20230920T120000
DTEND;TZID=America/Vancouver:20230920T140000
EXDATE;TZID=America/Vancouver:20231220T120000
RDATE;VALUE=PERIOD;TZID=America/Vancouver:20231213T120000/20231213T140000
RRULE:FREQ=MONTHLY;COUNT=9;INTERVAL=1;BYDAY=+3WE;B/YMONTH=1,2,3,4,5,9,10,11,
 12;WKST=MO
SUMMARY:Test RDATE
END:VEVENT

END:VCALENDAR

Version:

add an ICS file, example:

python-recurring-ical-events/test/calendars/issue-15-duplicated-events.ics

Line 1 in f4a90b2

BEGIN:VCALENDAR
add a test, example:

python-recurring-ical-events/test/test_issue_15.py

Line 21 in f4a90b2

def test_sequence_is_not_present(calendars):
fix the bug and ensure the test code passes

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Thanks for reporting this @natashamm! #74 is related. I like that there is actually a use-case for this!

Hi @natashamm. sorry - this was a wrong statement! I read EXRULE.

@natashamm, this should be fixed in v2.1.0. Can you confirm this to close this issue?

Confirmed this is fixed. Thank you!