* [TD-4752]<doc>: python connector supports nanoseconds.

* update english document too.

Docs/update latest feature

* fix warn mesage in jdbc

* change

* [TD-4876]<fix>: fix getNetworkTimeout and setNetworkTimeout in jdbc driver

* [TD-4117]<test>: remove System.out.println in all jdbc test cases

* change

Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

[TD-4868]add taosdump test to full test

taosdemoCfg adding how to use and minor bug fix

[TD-4825]<feature> order by col after group-by

[TD-4926]<fix>:follow log format convention

[TD-4950]<fix>: fix undefined left bit shift

[TD-4910]fix double free issue

[TD-4915]<fix> fix show create database except

[td-4905]<fix>:fix import caused crash.

Docs/update latest feature

1. rename semphone to semaphore
2. add comment for tsched.h
3. change the function signature for taosSchedulerTask, changing from
return int to void. We currently don't check any return code of the function.
4. add some error handlings. For fatal error, just exit the process because
the program may run into a random state.

[TD-4926]<fix>:fix core during operator time usage calculate

* fix crash if no result file.

* make taosdemo same as master branch.

[TD-4756]<fix>: nanosecond precison on gcBuildQueryJson

[TD-4561]feature:support statistics about operators running time

Feature/query