Suggest ABACUS could output the version

[pxlxingliang]

Suggest ABACUS could output the used version in the log file
And also run a simple command like : "abacus --version" to catch the version.

[mohanchen]

That's an excellent idea! Who will be suitable to add the new feature? @pxlxingliang @caic99

[caic99]

That's an excellent idea! Who will be suitable to add the new feature? @pxlxingliang @caic99

Hi @mohanchen ,
Since abacus does't support any arguments, printing abacus version information in output log is a better choice for now.
And, how to decide the version number? @dyzheng