Slack-sdk

Refer to [v2.9.0 milestone](https://github.com/slackapi/python-slackclient/milestone/17?closed=1) to know the complete list of the issues resolved by this release.

**Updates**

1. [WebClient] 811 Add workflows.* API support - Thanks misscoded
2. [WebClient] 810 809 Only set default filename in files_upload if file is an instance of str - Thanks csaska

Refer to [v2.8.2 milestone](https://github.com/slackapi/python-slackclient/milestone/16?closed=1) to know the complete list of the issues resolved by this release.

**Updates**

1. [WebClient] 795 794 Add admin.conversations.* API methods in WebClient/AsyncWebClient - Thanks ruberVulpes
2. [WebClient] 796 Fix a link to the Static options documentation - Thanks Jamim

Refer to [v2.8.1 milestone](https://github.com/slackapi/python-slackclient/milestone/15?closed=1) to know the complete list of the issues resolved by this release.

**Updates**

1. [WebClient] 778 779 Adding support for View objects for views.push/update/publish - Thanks ruberVulpes
2. [WebClient] 786 Fix admin.conversations.restrictAccess.* methods to match documentation - Thanks ruberVulpes

Refer to [v2.8.0 milestone](https://github.com/slackapi/python-slackclient/milestone/14?closed=1) to know the complete list of the issues resolved by this release.

**New Features**

1. [WebClient] 765 766 Introduce AsyncWebClient/AsyncWebhookClient providing coroutines - Thanks seratch
2. [Block Kit] 767 768 Add "header" block support - Thanks mwbrooks

**Updates**

1. [WebClient] 738 Add HTTP_PROXY, HTTPS_PROXY env variable support in async WebClient - Thanks iamtofr seratch
2. [WebClient] 769 773 Enable User-Agent to have additional info part - Thanks seratch
3. [WebClient] 770 771 Fix a bug where `files.upload`'s file param doesn't accept bytes data - Thanks seratch

Refer to [v2.7.3 milestone](https://github.com/slackapi/python-slackclient/milestone/13?closed=1) to know the complete list of the issues resolved by this release.

**Updates**

1. [WebClient] 754 Fix 729 Add admin.conversations.restrictAccess.*, conversations.mark API - Thanks ruberVulpes kian2attari
2. [WebClient] 758 Fix 757 Add admin.usergroups.addTeams, calls.participants.remove API - Thanks seratch
3. [WebClient] 727 Fix 645 Unclosed client session - Thanks NoAnyLove jourdanrodrigues
4. [WebClient] 745 Fix 744 a validation logic bug in DatePickerElement - Thanks dzudi941
5. [WebClient] 752 Fix 733 Better error handling when getting TimeoutError in RTMClientstart() - Thanks liorblob seratch
6. [WebClient] 751 Fix 718 by handling unexpected response body format - Thanks jeffbuswell seratch

Refer to [v2.7.2 milestone](https://github.com/slackapi/python-slackclient/milestone/12?closed=1) to know the complete list of the issues resolved by this release.

**Updates**

1. [WebClient] Fix 728 by adding bytearray support in files_upload (sync mode) - Thanks sofya-salmanova seratch
2. [WebClient] 726 Fix InputBlock.hint validation failure - Thanks jourdanrodrigues
3. [WebClient] 723 Correct the default value of InputBlock.label, hint - Thanks jourdanrodrigues