deps: relax version constraint for konoha

[himkt]

This PR updates the version constraint for konoha.

I'm so sorry that I didn't notice the issue #3059.
I updated konoha that removed the dependency for importlib-metadata, let me update requirements-dev.txt.

Now konoha only depends on requests with the support for Python3.8+ (https://github.com/himkt/konoha/blob/v5.5.2/pyproject.toml#L27).
So I think it can be safely used with flair and I update the requirements file.

And I have one question for dependency of janome. janome is only used in JapaneseTokenizer, which depends on konoha, therefore janome should be installed in the same place of konoha, I think. There are multiple options:

• (1) move janome to requirements-dev.txt
• (2) remove janome from requirements.txt and install with konoha[janome] (extras)
• (3) move konoha to requirements.txt
• (4) remove konoha from requirements-dev.txt and install konoha with konoha[janome] (extras)

I'd like to a maintainer's opinion.

[alanakbik]

@himkt thanks for updating this!

[himkt]

And I have one question for dependency of janome.
janome is only used in JapaneseTokenizer, which depends on konoha,
therefore janome should be installed in the same place of konoha, I think.
There are multiple options:

(1) move janome to requirements-dev.txt
(2) remove janome from requirements.txt and install with konoha[janome] (extras)
(3) move konoha to requirements.txt
(4) remove konoha from requirements-dev.txt and install konoha with konoha[janome] (extras)

Thank you @alanakbik! What do you think about that?

[helpmefindaname]

Hi @himkt
For me the ideal would be to not have neither listed as dependency, as less unused dependencies are better.
However with the current implementation, janome is always required as it will be imported, while konoha is only needed if the JapaneseTokenizer is used. Hence we don't depend on konoha and handle it as an optional dependency instead.

If you have time to refactor the JapaneseTokenizer to use lazy imports on janome, PR's are welcome

[himkt]

Thank you @helpmefindaname, it makes sense! I'll work on that later. 👍