This version mainly fixes some bugs and optimizes the code quality.

[#2089] Fix config list return page bug.
[#2237] Enhance HttpClient usage.
[#2800] Update beatinfo when received instance modify info
[#2810] Don't send beat when standalone model.
[#2839] Fix Json conversion exception when loading Datum cache file.
[#2844] Fix Time format error.
[#2847] Fix config IT
[#2982] Fix the error message could not be passed through at the RPC layer.
[#2985] Fix In inline mode, the task execution condition determines the problem.
[#2988][#2989] Fix can get configuration from standalone + embedded storage.
[#2992] Use new code style.
[#2994] Optimize the configuration post - release process.
[#3060] Upgrade the database driver version of Mysql to 8
[#3063] Fix parameter validation boundary problem.
[#3110] Fix confused connection when one nacos nodes down.
[#3160] Fix compatibility issue when reading cache files with suffix ".datum"
[#3175] Fix probably the end value is negative number in ServiceController.java.

This version mainly fixes some bugs and optimizes the code quality.

[#2089] Fix config list return page bug.
[#2237] Enhance HttpClient usage.
[#2800] Update beatinfo when received instance modify info
[#2810] Don't send beat when standalone model.
[#2839] Fix Json conversion exception when loading Datum cache file.
[#2844] Fix Time format error.
[#2847] Fix config IT
[#2982] Fix the error message could not be passed through at the RPC layer.
[#2985] Fix In inline mode, the task execution condition determines the problem.
[#2988][#2989] Fix can get configuration from standalone + embedded storage.
[#2992] Use new code style.
[#2994] Optimize the configuration post - release process.
[#3060] Upgrade the database driver version of Mysql to 8
[#3063] Fix parameter validation boundary problem.
[#3110] Fix confused connection when one nacos nodes down.
[#3160] Fix compatibility issue when reading cache files with suffix ".datum"
[#3175] Fix probably the end value is negative number in ServiceController.java.

[#2530] [#2758] Consistency protocol abstraction
[#2560] Nacos-client : ServerHttpAgent builds the unnormalized URL 
[#2569] Change NamingProxy#reqAPI method throw exception log describe
[#2577] Fix naming client http read timeout and connect timeout properties
[#2638] Support https
[#2647] Modify config service md5 generation method 
[#2661] Keep query criteria when config detail return to config list
[#2761] ProtocolManager class's getCpProtocol()/getApProtocol() method ' codes can be optimized.
[#2697] Fix the problem that properties have empty lines and cannot be edited
[#2738] Tenant legality verification. #2785
[#2740] Modify the way of get remote state
[#2664] UI add groupName parameter
[#2765] Optimize MemberUtils class's kRandom method 
[#2842] Replace Fastjson with Jackson
[#2871] SQLException when config server quickstart 

[#2530] [#2758] Consistency protocol abstraction
[#2560] Nacos-client : ServerHttpAgent builds the unnormalized URL 
[#2569] Change NamingProxy#reqAPI method throw exception log describe
[#2577] Fix naming client http read timeout and connect timeout properties
[#2638] Support https
[#2647] Modify config service md5 generation method 
[#2661] Keep query criteria when config detail return to config list
[#2761] ProtocolManager class's getCpProtocol()/getApProtocol() method ' codes can be optimized.
[#2697] Fix the problem that properties have empty lines and cannot be edited
[#2733] Support service change event
[#2738] Tenant legality verification
[#2740] Modify the way of get remote state
[#2664] UI add groupName parameter
[#2765] Optimize MemberUtils class's kRandom method

#2537 Client beat not correctly redirected
#2401 timed sync task failed
#2457 前端配置列表节点并发查询数会随着点击查看其他节点数据后累加
#2451 1.2.0 无法修改自己的密码
#2449 配置中心，配置列表无法控制分页个数
#2533 dubbo 不停的重复注册服务
#2527 dubbo beat trigger JSONException
#2453 控制台 历史版本 js异常
#1674 Instance information in the Java sdk cache will not be updated because the update thread exit

#2370 com.alibaba.nacos.naming.misc.GlobalConfig taskDispatchPeriod 参数初始值疑问
#2258 HealthCheckReactor is not isolated by namespace
#2248 Nacos server application.properties reloadable
#2232 Distro load data failed cause start failed.
#2184 nacos 1.1.4 删除配置ui展示列表为空
#2171 支持同一个 namesapce 中的克隆
#2168 page bug in configuration list
#2145 支持自定义namespace id
#2123 Client heart beat package is too large
#2056 整合dubbo采用nacos作为注册中心报错 [NACOS SocketTimeoutException httpPost] currentServerAddr: http://192.168.3.58:8848， err : Read timed out
#2042 mysql8.0 support error
#2020 com.alibaba.nacos.client.config.utils.IOUtils.toString NPE
#2018 http connection Keepalive is invalid，dubbo consumer has many TIME_WAIT
#2006 Choose instance for nacos
#2000 nacos 1.1.3版本，可能产生死循环bug
#1993 集群模式bug,使用discovery会报错java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([172.XX.XX.23:80]) tried
#1966 关于上传zip时候，type判断的bug
#1957 调用修改实例接口,未传的参数值会被清空
#1947 How to solve ERROR [NACOS-API] failed to added push client.
#1858 namingService keep update service instance after unSubscribe all listeners
#1627 Database field assignment error
#1606 why i cann't define namespaceId when i add one
#1184 Replace error message 'failed to req API:/nacos/v1/ns/instance/list after all servers' to more specific message
#1105 Access control of resource in Nacos
#434 [Bug]编辑配置后历史版本显示错误，回滚后配置丢失

Fix some bugs of 1.2.0-beta.0

Current version is for public test, not recommended for production use. Refer to https://nacos.io/zh-cn/blog/nacos%201.2.0-beta.0.html for user guide of access control.

这个版本是用于公测的beta版本，不推荐上生产。可以参考https://nacos.io/zh-cn/blog/nacos%201.2.0-beta.0.html 来使用这个版本发布的权限控制功能。

#2248 Nacos server application.properties reloadable
#2184 nacos 1.1.4 删除配置ui展示列表为空
#2171 支持同一个 namesapce 中的克隆
#2145 支持自定义namespace id
#2123 Client heart beat package is too large
#2042 mysql8.0 support error
#2020 com.alibaba.nacos.client.config.utils.IOUtils.toString NPE
#2018 http connection Keepalive is invalid，dubbo consumer has many TIME_WAIT
#2006 Choose instance for nacos
#2000 nacos 1.1.3版本，可能产生死循环bug
#1993 集群模式bug,使用discovery会报错java.lang.IllegalStateException: failed to req API:/nacos/v1/ns/instance after all servers([172.XX.XX.23:80]) tried
#1966 关于上传zip时候，type判断的bug
#1957 调用修改实例接口,未传的参数值会被清空
#1947 How to solve ERROR [NACOS-API] failed to added push client.
#1858 namingService keep update service instance after unSubscribe all listeners
#1627 Database field assignment error
#1184 Replace error message 'failed to req API:/nacos/v1/ns/instance/list after all servers' to more specific message
#1105 Access control of resource in Nacos
#434 [Bug]编辑配置后历史版本显示错误，回滚后配置丢失

#182 Health check field and protection threshold are confused
#1409 Integrate with Istio as a service discovery backend
#1507 It is recommended that the shutdown.sh script close only the nodes in the current directory, not all nodes.
#1665 DataSync always not executed after network partition
#1671 'Client-Version' header not set in http request from nacos client
#1759 The number of new configuration words is too long. Tip 400 is not friendly enough.
#1825 In modifying service instance page.Error information not clear
#1874 Repeat defined class NacoException
#1906 Set a new thread pool here, but do not open the Notifier task, whether to add executor.execute(new Notifier());

#290 What is the meaning of each log file? Do Nacos need so many log files?
#1459 Feature reques: the configuration list supports multiple selection deletion.
#1479 It is recommended to do the trim operation when configuring the new dataid on the Nacos web page.
#1492 Database master slave config support different db name and password,now is same
#1519 The subscriber list is not displayed correctly
#1520 Private network can't load fonts, favicon
#1529 Time of servers not synchronized cause data inconsistent
#1548 Upgrade the fastjson version, fix the vulnerability
#1569 can't stop beta publish in other namespace except public namespace
#1591 Data listener lost if server list changed