* enh: coverage

* enh: coverage, atomic

* fix: int to int8 error

* enh: delete unused code

docs: this line is inaccurate, in current connector-python repo, it require python >= 3.6.2 because there is a dependence iso8601 (#20336)
Co-authored-by: NAdam Ji <jrgwyz@163.com>

docs: add event window

docs: add event window

docs: add event window

release: update 3.0 version to 3.0.3.0

docs: release 3.0.3.0

update coverage test script

fix: update docs for WAL_RETENTION_PERIOD, etc.

docs: Update index.md

remove useless title

feat: add language clause for create function

* docs: update csharp connector status

* docs: fix csharp ws bulk pulling

* docs: clarify database param is optional to websocket dsn

* docs: fix java connector mistake

* fix: a few typos

* fix: many typos

ci:add cache in ci compling

* test: add python demo for websocket

* fix test

* fix test

* fix test

doc: fix markdown errors and links

docs:cdiwadkar16-patch-1 - example for INTERP

Update index.md

docs - update social media links in readme.md

Update 07-tmq.mdx

* fix: windows release from tdengine/package/release.bat failed

* fix: TDengine spelling

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Co-authored-by: Nfacetosea <25808407@qq.com>