This reverts commit ea2fdef0.

This reverts commit dc67933e.

This reverts commit 3ed60f37.

This reverts commit 7db3d565.

This reverts commit 4d0b3af9.

This reverts commit 7a1415ec.

This reverts commit dffb1d94.

This reverts commit a7a1738c.

This reverts commit 40a2596e.

Bumps [snakeyaml](https://bitbucket.org/snakeyaml/snakeyaml) from 1.17 to 1.31.
- [Commits](https://bitbucket.org/snakeyaml/snakeyaml/branches/compare/snakeyaml-1.31..v1.17)

---
updated-dependencies:
- dependency-name: org.yaml:snakeyaml
  dependency-type: direct:production
...
Signed-off-by: Ndependabot[bot] <support@github.com>
Signed-off-by: Ndependabot[bot] <support@github.com>
Co-authored-by: Ndependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Co-authored-by: Nxiangdong huang <sainthxd@gmail.com>
Co-authored-by: Nchaow <xunmengzhuiyi@gmail.com>
Co-authored-by: N王雨轩 <18373391@buaa.edu.cn>
Co-authored-by: Nwang-lucy <52901486+wang-lucy@users.noreply.github.com>

* seperate thrift module into 3 parts; extract Node Serialization from Server module into Cluster module
* add instruction for the ordering of imports
* add snappy into service-rpc pom
* modify readme of the whole project
* add logback and slf4j in root/pom

* update how to compile the site
* upgrade version to v0.12
* remove download links of legacy versions, add -c parameter for cli in doc

* set thrift and antlr as two independent module
Co-authored-by: Nxiangdong huang <sainthxd@gmail.com>

* [IOTDB-503] Add checkTimeseriesExists for session

* [IOTDB-565] MQTT Protocol Support

* [IOTDB-565] upgrade fastjson to latest version