enhancements to add logout notification service as first class servic…

…e (#4390)

* enhancements to add logout notification service as first class service for SLO notifications.

* more signout rework

* add interface for back channel http client

* add default timeouts for backchannel http calls

Update 4_javascript_client.rst (#4292)

added an additional step to maintain consistency with previous tutorial chapters. This would be useful if a learner skips ahead directly to building a JS client after getting the main auth server to work.

update SDK

Use non-case sensitive string for any ids #3184 (#4234)

set versin to 3.1.2

set version to 3.1.1

Add JAR support (#4024)

* add logic to be compatible with both OIDC request objects and JAR

* add tests for request object without any query string parameters

* update logic to move client_id extraction to JwtRequestValidator

* add more explicit validation check of client id in query vs jar payload

Co-authored-by: Brock Allen <brockallen@gmail.com>

Update Bug_report.md

switch to 4.x

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