Add daily occurences to nextMonth and NextYear

[KAYLukas]

This adds support for BYMINUTE, BYHOUR in the yearly and monthly mode, verified this to work the same way as icalendar.

[codecov]

Codecov Report

Merging #437 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@             Coverage Diff              @@
##             master     #437      +/-   ##
============================================
+ Coverage     98.87%   98.88%   +<.01%     
- Complexity     1815     1837      +22     
============================================
  Files            65       65              
  Lines          5177     5218      +41     
============================================
+ Hits           5119     5160      +41     
  Misses           58       58

Impacted Files	Coverage Δ	Complexity Δ
lib/Recur/RRuleIterator.php	99.49% <100%> (+0.07%)	179 <12> (+26)	⬆️
lib/Property.php	98.92% <0%> (-0.05%)	68% <0%> (-2%)
lib/ITip/Broker.php	99.32% <0%> (-0.01%)	154% <0%> (ø)
lib/Parser/MimeDir.php	100% <0%> (ø)	84% <0%> (-2%)	⬇️

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