Make --version a non-global option

[mkniewallner]

Resolves #142.

[mkniewallner]

Since application only has the default definition, I ended up passing definition as an extra argument, to retrieve it in _describe_application.
Otherwise, the command would not display --version option.

If there's a better way to handle that, I would gladly update that.

[Secrus]

I would prefer for the --version to be available only on the application level. I don't see why it should work with list or help commands, since app list --version suggests that we want a version of list not of the app.

[mkniewallner]

I would prefer for the --version to be available only on the application level. I don't see why it should work with list or help commands, since app list --version suggests that we want a version of list not of the app.

I share the same feeling, so I'm glad to read that. I'll rework the PR in that sense.

[Secrus]

@mkniewallner I think I am gonna delay this feature to the 1.1 release. Took a look into the code and in the current state, this is a non-trivial issue to add an app-level only option. I plan on refactoring and improving the parser past-1.0 and with what I have in mind, this should be much easier then.

[mkniewallner]

@mkniewallner I think I am gonna delay this feature to the 1.1 release. Took a look into the code and in the current state, this is a non-trivial issue to add an app-level only option. I plan on refactoring and improving the parser past-1.0 and with what I have in mind, this should be much easier then.

Makes sense. I didn't think it would require heavy changes when starting this PR, so entirely re-thinking the approach sounds better.