Tagging the new release

Tagging the new release

Tagging the new release

Bump client version to 5.3.0 (#634)

Also, bumped the version of the Hazelcast in couple of places
to 5.3.0.

DBAPI Docs [API-1972] (#626)

* Initial DBAPI docs, moved SQL to its own chapter.

* Added DBAPI sample

* updates

* Added DBAPI docs and code sample

* Fix ref

* Black

* Trivial doc fix

* Addressed reviews

* Addressed reviews

Tagging v5.1 release

[BACKPORT] Send TCP metrics for bytes sent and received to server (#500)

* Send TCP metrics for bytes sent and received to server

It would be good to send `tcp.bytesReceived` and `tcp.bytesSend`
metrics in the metrics blob to the server, so that, someone can
track how much traffic is passing between the server and the client.

I have manually tested the stats exported to Prometheus and verified
that these two new stats are displayed there correctly.

* add v5 to branch filter in test runner

Backport important fixes to 4.2.z (#498)

This is combined PR to backport some important changes that would
apply to 4.2.z. Mainly it fixes

- broken links
- test runners on Windows
- wrong `int_from_bytes` calculation

Get rid of the old links in the documentation (#489)

* Get rid of the old links in the documentation

We have now moved all our documentation & open-source site
to `hazelcast.com` with a new structure. This PR corrects all the
links to `*.hazelcast.org` with the new ones.

* add link checker option to sphinx and fix broken/redirected links

* use suggested article

Rename Fast-Aggregations to Aggregations (#460)

* Rename Fast-Aggregations to Aggregations

This request came during the release review process. To make
the client documentation more inline with the other documentation,
we are renaming `Fast Aggregations` to just `Aggregations`.

Also, improved the documentation a little bit for the Aggregations
section.

* make the text more clear