docs: Update apps' compatibility threshold to 3.0, from 2.1.0.

Zulip Server 3.0 is now about 21 months old, which is more than
18 months.  Per the general policy in the "Client apps" section
below, that means it's time to drop support for older versions.

We released 4.0 in 2021-05, so around 2022-11 we can update this
further to say 4.0.
This commit is contained in:
Greg Price
2022-04-12 17:25:54 -07:00
committed by Tim Abbott
parent 12c563cc94
commit 60e09834a3

View File

@@ -92,7 +92,7 @@ The Zulip server and clients apps are all carefully engineered to
ensure compatibility with old versions. In particular:
- The Zulip mobile and desktop apps maintain backwards-compatibility
code to support any Zulip server since 2.1.0. (They may also work
code to support any Zulip server since 3.0. (They may also work
with older versions, with a degraded experience).
- Zulip maintains an [API changelog](https://zulip.com/api/changelog)
detailing all changes to the API to make it easy for client