Minor comment: Sentences should start in capital

I see in many places sentences that does not start in capital. For example:

Just mentioning, because I think it is more correct to start capital letter and in addition aesthetically superior.

Personally, I don’t see anything shocking here.

During the beta, I think we need to invest our time wisely (easier said than done I know). I would be in favour of trying to target important problems and not bicker over minor grammatical issues.

Ok, in general I see it as a very good quality course (content, examples, explanations). I am trying to provide as much feedback as possible. Sorry if I am being too much pesky, I will restrict myself to technical details for now on.

Ok, in general I see it as a very good quality course (content, examples, explanations)

Great to hear!

I am trying to provide as much feedback as possible.

Your feed-back is very much appreciated, thanks a lot!

Sorry if I am being too much pesky, I will restrict myself to technical details for now on.

My comment above was not meant to be harsh but more as something like “this is probably good enough and not something we should worry about too much”.