Set minimum version of PyDSTool, allowing scipy version to be unpinned

[willfurnass]

Allows use of scipy >= 1.0.0.

scipy.integrate functionality may have changed so this definitely needs reviewing.

Closes #63

[codecov-io]

Codecov Report

Merging #338 into master will increase coverage by 0.2%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master     #338     +/-   ##
=========================================
+ Coverage   68.73%   68.94%   +0.2%     
=========================================
  Files           9        2      -7     
  Lines        5754     5696     -58     
  Branches     1572     1556     -16     
=========================================
- Hits         3955     3927     -28     
+ Misses       1410     1382     -28     
+ Partials      389      387      -2

Impacted Files	Coverage Δ
mumot/__init__.py	68.93% <0%> (-15.69%)	⬇️
mumot/controllers.py
mumot/consts.py
mumot/models.py
mumot/utils.py
mumot/views.py
mumot/exceptions.py
mumot/defaults.py

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[joefresna]

I tested a couple of notebooks and I don't see any problem with them.

However, I can't see the scipy version...

$ python -c "import scipy; print(scipy.__version__)"

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'scipy'

[willfurnass]

@joefresna Works for me. Are you definitely using the right interpreter? What does the following show?

python -c 'import scipy, sys; print(sys.executable, scipy.__version__, scipy.__file__, sep="\n")'

[joefresna]

I thought I had to create a new environment to test things with new package versions.
This is what I did... but I fail somewhere...

JF-MacBook:MuMoT joefresna$ git checkout newer_pydstool_scipy
M	docs/MuMoTuserManual.ipynb
Already on 'newer_pydstool_scipy'
Your branch is up to date with 'willfurnass/newer_pydstool_scipy'.

JF-MacBook:MuMoT joefresna$ conda create -n mumot-will python=3.6

Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 4.5.11
  latest version: 4.7.11

Please update conda by running

    $ conda update -n base -c defaults conda



## Package Plan ##

  environment location: /Users/joefresna/anaconda/envs/mumot-will

  added / updated specs: 
    - python=3.6


The following packages will be downloaded:

    package                    |            build
    ---------------------------|-----------------
    wheel-0.33.4               |           py36_0          39 KB
    pip-19.2.2                 |           py36_0         1.9 MB
    setuptools-41.0.1          |           py36_0         641 KB
    sqlite-3.29.0              |       ha441bb4_0         2.4 MB
    python-3.6.9               |       h359304d_0        20.5 MB
    certifi-2019.6.16          |           py36_1         155 KB
    openssl-1.1.1c             |       h1de35cc_1         3.4 MB
    ------------------------------------------------------------
                                           Total:        29.0 MB

The following NEW packages will be INSTALLED:

    ca-certificates: 2019.5.15-1            
    certifi:         2019.6.16-py36_1       
    libcxx:          4.0.1-hcfea43d_1       
    libcxxabi:       4.0.1-hcfea43d_1       
    libedit:         3.1.20181209-hb402a30_0
    libffi:          3.2.1-h475c297_4       
    ncurses:         6.1-h0a44026_1         
    openssl:         1.1.1c-h1de35cc_1      
    pip:             19.2.2-py36_0          
    python:          3.6.9-h359304d_0       
    readline:        7.0-h1de35cc_5         
    setuptools:      41.0.1-py36_0          
    sqlite:          3.29.0-ha441bb4_0      
    tk:              8.6.8-ha441bb4_0       
    wheel:           0.33.4-py36_0          
    xz:              5.2.4-h1de35cc_4       
    zlib:            1.2.11-h1de35cc_3    
.....

JF-MacBook:MuMoT joefresna$ conda activate mumot-will

(mumot-will) JF-MacBook:MuMoT joefresna$ python -c 'import sys; print(sys.executable, sep="\n")'
/Users/joefresna/anaconda/envs/mumot-will/bin/python

(mumot-will) JF-MacBook:MuMoT joefresna$ python -c 'import scipy, sys; print(sys.executable, scipy.__version__, scipy.__file__, sep="\n")'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'scipy'

[willfurnass]

@joefresna I think you're missing steps 6 and 7 from here.

[joefresna]

Sorry, my bad. I solved it.
The changes look fine to me