Upgrade Python in scipy-notebook to 3.7

[alasdairtran]

This PR pins the Python version to prevent Conda from downgrading (e.g. from 3.7 to 3.6). It also updates two packages, numba and h5py, to make them compatible with Python 3.7. Fixes issue #768

[parente]

Build fails consistently after 10 minutes of solving conda dependencies in the tensorflow image with no output. We can try merging and see what happens with the build on Docker Cloud, and revert if it causes trouble there.

[alasdairtran]

Build fails consistently after 10 minutes of solving conda dependencies in the tensorflow image with no output. We can try merging and see what happens with the build on Docker Cloud, and revert if it causes trouble there.

Actually I think Tensorflow hasn't officially supported Python 3.7 yet. We can track the issue here.

Let's wait for Tensorflow 1.13 to be released before merging my PR.

[parmentelat]

my understanding is that tensorflow was released as 1.13 a short while ago
is there anything that needs to be done explicitly to get this back on track ?

[parente]

Resolved the merge conflict using the nice new GH editor for that, and kicked off a build to see where we stand.

[parente]

SpecsConfigurationConflictError: Requested specs conflict with configured specs.
  requested specs: 
    - keras=2.2
    - tensorflow=1.12
  pinned specs: 
    - python=3.7
Use 'conda config --show-sources' to look for 'pinned_specs' and 'track_features'
configuration parameters.  Pinned specs may also be defined in the file
/opt/conda/conda-meta/pinned.

Next step is for the PR to update versions.

[parmentelat]

Hey folks; I'd love to see this come through, is there anything I can do to help out on this one ?

[parente]

@parmentelat The work to be done to get a conda-forge build of tensorflow 1.13 w/ Python 3.7 support is tracked in conda-forge/tensorflow-feedstock#66. You can give that a read and see if there's a place where you can lend a hand.

[panmona]

The referenced PR was merged 2 days ago ✨

[parente]

Rebased on master and rebuilding with tf 1.13

[parente]

Build is green. Thanks for the contributions and patience everyone!