Big update, setting minimum PHP 8.0 required. Dependencies set to min…

…imum version of latest installable package. Code style update. All functions now have typed parameters and return types where this was possible. Added annotation for thrown errors if any. Class properties and interfaces also typed where immediately clear what they should be. Generic code styling applied (mainly spacing).

Merge branch 'alanpoulain-sf5-compatibility'

v3.2.0

## New features

* Deprecates PHP5 Behatch#246
* Display the x-debug-token-link when its available Behatch#251
* Don’t require @javascript to take screenshot Behatch#247
* [json] Use swagger dump as json schemas source Behatch#245
* [system] Dump command output Behatch#255
* [rest] Allows parameters with dot Behatch#258

## Bugfixes

* Correctly diplay utf8 json Behatch#252

v3.1.0

## New features

* New russian translation Behatch#240
* Add "JSON node should match" context Behatch#234

## Bugfixes

* Fix set content headers Behatch#218
* Fix travis build Behatch#242
* Fix automatic casting for large numeric value Behatch#237
* Add colon for "the JSON should be equal to" step Behatch#239

Require guzzlehttp/guzzle for dev only

Behatch#231

Require guzzlehttp/guzzle for dev only

Behatch#231

Remove deprecated methods

Merge branch 'php72'

Fix xliff files

Merge branch 'i18n'