Add sudachipy like import path

[mh-northlander]

#84.

We can still use direct import path like from sudachi import Dictionary

[eiennohito]

I think that original imports were better, we are promoting new ways of import as the correct usage, am I correct?

But we still need to have a test that old ways of import do not break (a new one, which only does imports inside test methods).

[mh-northlander]

I think that original imports were better, we are promoting new ways of import as the correct usage, am I correct?

Currently we don't have concrete plan about this.
I personally think we can put everything in the root module since the amount is not so large.

In the future we will change the API along with the rust API and may want a different module structure.
For that time, I guess we can keep current (old) path as default.

[eiennohito]

I personally think we can put everything in the root module since the amount is not so large.

Completely agree with that, and it is also easier to use it that way.

I would think that we should move to having the public API under the main package (sudachi) by default and keep the old modules only for compatibility (without deprecating them though).