1. Fixed Management->Account->returnTokenInformation #53, thanks to @eriksaulnier
2. Add support for the following options that can be added when using availabilityForSingleMeetings or availabilityForMultipleMeetings #49, thanks to @BEndreLexly

1. Nylas Scheduler support: https://developer.nylas.com/docs/api/v2/scheduler/#tag--Scheduler
2. All methods' API document link update
3. Some parameters' validation rules update
4. PHP original upload support: $_FILES['file'], $_FILES['image']
   https://github.com/lanlin/nylas-php/blob/master/src/Files/File.php#L97
   https://github.com/lanlin/nylas-php/blob/master/src/Schedulers/Image.php#L94

1. Nylas API 2.7 support
2. Packges minimal version required update
3. Code format & Doc update
4. Bug fix #48, thanks to @luisvdbk-c

1. bugfix #45
2. dev package replacement(fzaninotto/faker to fakerphp/faker)

1. Nylas API 2.3 support
2. PHP 8.1 support
3. some helper functions optimization
4. Some other updates

break changes:

// params of this method changed, now it needs to pass an array
$nylas->Threads->Thread->returnAllAccounts(); 

fix bug #42 Hosted Authentication postOAuthToken issn't working.

fix bug #42 Hosted Authentication postOAuthToken issn't working.

fix bug #42 Hosted Authentication postOAuthToken issn't working.

1. API 2.2 & 2.3 beta supported
2. PHP 8.0+ supported
3. Many breaking changes

update unit tests
update document
fix some bugs