Remove blocking semaphore, display initial state and allow large matrix

[brice-fr]

Actual library LED_Display animations are not working due to blocking semaphore The initial state (offset 0,0) of the buffer is never displayed in animations Large buffer matrix can not be displayed or wrapped around due to limited offset type Various minor english typo corrections

[johnwargo]

So this is months old, why hasn't someone from M5Stack at least commented on this? Merge it?

[KodeMunkie]

Wish I'd seen this earlier - I suspected a major bug in the animation code and was confused by the use of a semaphore. I wrote my own horizontal scroller logic (which is all I needed) to work around the issues in my own project Atomic Text.

I'm somewhat shocked too that this hasn't been merged in either or the Atom library itself updated since January.

[Tinyu-Zhao]

Hi, can you please enable Allow edits from maintainers, I need to format the code.