24) 2018.11.15
24.1) feature: http_client::do_reply 记录请求信息，以便于排查问题

23) 2018.10.23
23.1) feature: master_listen.cpp, master_listen_sock() 中的 defer_accept
可以控制是否采用延迟接收方式
23.2) bugfix: master_listen.cpp, master_bind_udp() 中在非 reuseport 方式下如果
没有成功绑定任何地址，则应返回错误

22) 2018.10.17
22.1) bugfix: 对于 Centos7.x 以下版本，当需 acl_master 绑定 UDP 服务时，会造成
因类型判断有误导致的崩溃问题，Centos7.x 以上版本不存在此问题，因为 UDP 服务是
由服务模块自行进行绑定

21) 2017.3.21
21.1) feature: http_client.cpp 里需要记录客户端发来的命令字

20) 2017.1.31
20.1) bugfix: master_conf.cpp check_xxx should be override after reloading services' configures.

19) 2018.1.24
19.1) feature: web interface adds many checking parameters.

18) 2018.1.23
18.1) feature: web interface adds version info for every services.

17) 2018.1.19
17.1) log: don't save some command reply information

16) 2018.1.5
16.1) bugfix: remove command in ACL_MASTER_SERV struct, which maybe be misused

15) 2018.1.3
15.1) bugfix: the service start item is lost in action/service_list.cpp

14) 2017.12.22
14.1) bugfix: master_conf.cpp 中 master_add_service 在调用 acl_master_ent_find
时，应该使用 entry->conf (配置文件路径) 而不是 entry->path 程序路径
14.2) bugfix: master_api.cpp 远程调用 restart 命令时，没有重新读取配置文件，
所以造成无法启动服务程序改名后的服务

13) 2017.11.21
13.1) feature: add master_config command for getting the configure of master

12) 2017.11.12
12.1) bugfix: master should not fork child process after starting service failed.

11) 2017.11.11
11.1) feature: master can start services which are specified in file.

10) 2017.11.7
10.1) feature: master can start one service with the specified path

9) 2017.10.26
9.1) feature: when starting one or more services remotely, sync or async can be used.

8) 2017.9.22
8.1) workaround: restructure the manage module of acl_master.

7) 2017.9.9
7.1) feature: master can wait callback from children when reloading the specific children

6) 2017.9.5
6.1) feature: master can wait children to exit with sync or async
6.2) feature: master can kill SIGTERM children when reloading
6.3) bugfix: master_params.cpp 中的 init_conf_str_vars 函数在 master reload 时
有内存泄露

5) 2017.8.11
5.1) safety: master can't fatal for some configure error of any app service.

4) 2017.7.7
4.1) feature: master can stop or kill one service, stopping service is graceful
by closing the IPC pipe, and killing service is rude by signal SIGTEM children.
4.2) feature: add graceful stop API in master's web management interface.

3) 2017.6.26
3.1) protocol: changed the web management protocols.

2) 2017.6.25
2.1) feature: acl_master uses kernel event mode

1) 2017.6.18
1.1) feature: In Docker's running time, the master's pid was set to 1; When
stopping master by sending TERM singal to master's pid, master_sigdeath func
will be called and which'll send TERM to -pid that's the master's pid group,
but in docker the pid is 1, so we should stop the children in the other way.