MAINT: Loosen dependencies

[codecov[bot]]

Codecov Report

Patch coverage has no change and project coverage change: -0.05 :warning:

Comparison is base (951119e) 98.59% compared to head (46cdedc) 98.54%.

:exclamation: Current head 46cdedc differs from pull request most recent head 03b25e4. Consider uploading reports for the commit 03b25e4 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #164 +/- ## ========================================== - Coverage 98.59% 98.54% -0.05% ========================================== Files 13 13 Lines 1279 1169 -110 Branches 184 184 ========================================== - Hits 1261 1152 -109 Misses 10 10 + Partials 8 7 -1 ``` | Flag | Coverage Δ | | |---|---|---| | travis | `?` | | | unittests | `98.54% <ø> (-0.01%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nipy#carryforward-flags-in-the-pull-request-comment) to find out more. [see 9 files with indirect coverage changes](https://app.codecov.io/gh/nipy/nitransforms/pull/164/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=nipy)

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[oesteban]

Hi @mgxd, sorry for my slow coming back to this. Could you remind me why this is necessary? It doesn't seem like a good idea to loosen up restrictions if the versions installed of numpy or scipy are not supported by the Python version.

[effigies]

Just looking at this... You really don't want a base library to have complicated install-time dependencies. Just declare a minimum version and move on. I suspect this was used when we were using python setup.py instead of pip, and the dependency resolution was terrible and did not respect python_requires.

[oesteban]

We probably want to update pins though, before going ahead, right?

[mgxd]

I think it should be fine, I'll rebase and trigger tests again

[effigies]

@oesteban Can you make me an admin on ReadTheDocs? I want to set up PR builds.

[oesteban]

@oesteban Can you make me an admin on ReadTheDocs? I want to set up PR builds.

done!

[effigies]

Sorry, Mathias. I forgot about dropping 3.7 in CI. Looks like we haven't been testing 3.10 or 3.11 either. Happy to take this over if you don't want to babysit the CI loops.

[mgxd]

Sure, I think this can be merged so you can just build off master

[effigies]

Sounds good.