Hide invisible first month using visibility: hidden

[majapw]

Fix for #939

FYI @erin-doyle @backwardok

[coveralls]

Coverage remained the same at 86.257% when pulling 0721387 on maja-hide-invisible-months-for-vo into 1331539 on master.

[backwardok]

does the animation still work as expected? Or do you need to add a visibility to the transition list (i'm not sure where that styling is set)?

[majapw]

@backwardok yeah so this is in the CalendarMonthGrid_month__hideForAnimation styles which means it def gets removed when animating. I guess i should probably hide the last month too since this only applies to the first month.

[majapw]

@backwardok @erin-doyle @ljharb can you take another look?

The effect here is that both the first and last month (which are off-screen) are hidden from the nav. However, both have visibility during animation (otherwise things get weird). Thoughts?

[backwardok]

Reasonable to me - I'll let someone else stamp

[ljharb]

seems legit.

any possibility of a regression test? no worries if not.

[coveralls]

Coverage remained the same at 86.275% when pulling 6ccee38 on maja-hide-invisible-months-for-vo into 44f3842 on master.

[erin-doyle]

👍