Issue 820 release

[valentinsulzer]

Description

Admin changes for the v0.2.0 release. Default branch will be changed to develop after this release.

Fixes #820

[codecov]

Codecov Report

Merging #856 into master will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #856   +/-   ##
=======================================
  Coverage   97.68%   97.68%           
=======================================
  Files         209      209           
  Lines       10587    10588    +1     
=======================================
+ Hits        10342    10343    +1     
  Misses        245      245           

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[tlestang]

Do you get why Travis fails on Mac?
integration.test_models.test_full_battery_models.test_lithium_ion.test_dfn.TestDFN seems to cause the issue.. but no issue on other platforms.

[valentinsulzer]

I think (but not sure yet) this could be because I updated the scikit-fem version to 0.4.0, it still works but much slower for some reason - so the test times out. We only use scikit-fem for the 2+1D models at the moment

[valentinsulzer]

Didn't make any difference locally but trying to revert and see if that works better

[brosaplanella]

Looks good to me.

[rtimms]

thanks @tinosulzer