DayView: segmentHeight not passed to customTemplate, wrong eventSnapSize default when changed

[mjtrjk]

I'm submitting a ...

[x] Bug report 
[ ] Feature request

Bug description / Feature request

1. A value given to hourSegmentHeight in mwl-calendar-day-view is not passed to a hourSegmentTemplate and must instead be hard-coded. Default template works because hourSegmentHeight from CalendarDayViewHourSegmentComponent is used directly.
2. Also, setting a different hourSegmentHeight does not update the default eventSnapSize. Setting the former to 20 leaves the latter at 30.

Minimal reproduction of the problem with instructions

Versions

Angular: 5+
Calendar library: 0.24

Browser name and version: Chrome (current), Firefox (current)