[appyevor] use miniconda 3.6 as base and rely on CONDA_PY

[marscher]

CONDA_PY selects the actual python version used in the build.

This should fix the build on 32 bit and python 3.5

[codecov[bot]]

Codecov Report

Merging #1337 into devel will decrease coverage by 3.88%. The diff coverage is 100%.

@@            Coverage Diff             @@
##            devel    #1337      +/-   ##
==========================================
- Coverage   91.69%   87.81%   -3.89%     
==========================================
  Files         224      224              
  Lines       25140    25141       +1     
==========================================
- Hits        23053    22077     -976     
- Misses       2087     3064     +977

Impacted Files	Coverage Δ
pyemma/msm/tests/test_estimator.py	96.82% <100%> (+0.05%)	:arrow_up:
pyemma/msm/tests/test_msm_serialization.py	15.9% <0%> (-83.53%)	:arrow_down:
pyemma/_base/serialization/mdtraj_helpers.py	9.8% <0%> (-82.36%)	:arrow_down:
pyemma/coordinates/tests/test_serialization.py	19.76% <0%> (-78.45%)	:arrow_down:
pyemma/_base/serialization/cli.py	4.91% <0%> (-77.05%)	:arrow_down:
...ma/_base/serialization/tests/test_serialization.py	24% <0%> (-73.72%)	:arrow_down:
pyemma/_base/serialization/pickle_extensions.py	25.86% <0%> (-68.97%)	:arrow_down:
pyemma/_base/serialization/h5file.py	25.33% <0%> (-62.67%)	:arrow_down:
pyemma/_base/serialization/tests/test_topology.py	41.66% <0%> (-55.56%)	:arrow_down:
pyemma/_base/serialization/tests/test_cli.py	44.11% <0%> (-52.95%)	:arrow_down:
... and 38 more

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[marscher]

note, that conda-build does not respect CONDA_NPY and --numpy to set the numpy runtime version.