What does the prefix "1." mean

Major versions are usually used to denote API versions. It is expected that on 
at least some level, all minor revisions of version 1 are somewhat compatible 
to each other, bar new features introduced in later minor revisions. 
Conversely, there is no expectation that SVN 2.X is in any way compatible with 
SVN 1.X. This way, a software is future-proof in the sense that if someone 
would invent a complete new way SVN could work (faster etc.), it can still be 
called SVN instead of FOOBAR.

Example: GRUB and GRUB 2.

If not, then it is redundant. For time-based
releases, wouldn't it be more useful to use the year, e.g. the next one
could be SVN 19 or SVN 19.04?

It is not redundant, as demonstrated.

Let's not abandon something that has been proven useful in the wild just 
because it seems a good thing to do. It isn't.

Regards,
________________________________
From: Thomas Singer <thomas.sin...@syntevo.com>
Sent: Wednesday, October 31, 2018 4:13 PM
To: dev@subversion.apache.org
Subject: SVN version numbering

Hi all,

OK, we are now at SVN 1.11 because you have agreed to release often with
only a few changes. What does the prefix "1." mean - will there be some
"2." or "3." in the future? If not, then it is redundant. For time-based
releases, wouldn't it be more useful to use the year, e.g. the next one
could be SVN 19 or SVN 19.04?

Cheers,
Tom

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