The book is finished

It seemed so far away. It seemed so far-fetched. And yet... here it is. The book is finished.

Obviously, there is no more book preview, but there might be book updates, fixes. Reason for that distinction is to avoid uploading large PDF file over-and-over onto GitHub. 

So, if changes are small fixes, I'll update book here, but not on GitHub. Updated book, apart from updates (duh!), will be smaller in size, but otherwise the same as the one uploaded to GitHub. 

When enough of those updates are accumulated, I'll compile the book for upload to GitHub. The book uploaded here is currently the same as on GitHub. 

The book is compiled on  January 26, 2021, and is available at usual location: 
https://drive.google.com/file/d/1fhiSsYFTW3jId0Fq5StJdBER_ukfjwZb/view?usp=sharing, with version:
927 ··· 2021-01-26 12:43:24 UTC ··· master.