update sphinx

[rutgerfick]

No description provided.

[codecov-commenter]

Codecov Report

Merging #96 into master will not change coverage.
The diff coverage is 82.08%.

@@           Coverage Diff           @@
##           master      #96   +/-   ##
=======================================
  Coverage   81.45%   81.45%           
=======================================
  Files          64       64           
  Lines        5549     5549           
  Branches      658      658           
=======================================
  Hits         4520     4520           
+ Misses        853      851    -2     
- Partials      176      178    +2     

Impacted Files	Coverage Δ
dmipy/core/modeling_framework.py	70.92% <82.08%> (ø)
dmipy/distributions/tests/test_bingham.py	91.04% <0.00%> (ø)

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[coveralls]

Pull Request Test Coverage Report for Build 658

• 56 of 67 (83.58%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 82.503%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
dmipy/core/modeling_framework.py	56	67	83.58%

Totals
Change from base Build 644:	0.0%
Covered Lines:	4696
Relevant Lines:	5549

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💛 - Coveralls