Update to version 0.4.6

[apaleyes]

Issue #, if available: #216

Description of changes: The Latin bug in installation is hurting emukit installation, so we need a new version with a fix out.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[apaleyes]

As an example, I've run into it here: amzn/xfer#60

[codecov-io]

Codecov Report

Merging #226 into master will not change coverage.
The diff coverage is 0%.

@@           Coverage Diff           @@
##           master     #226   +/-   ##
=======================================
  Coverage   89.18%   89.18%           
=======================================
  Files         110      110           
  Lines        3124     3124           
  Branches      335      335           
=======================================
  Hits         2786     2786           
  Misses        273      273           
  Partials       65       65

Impacted Files	Coverage Δ
emukit/__version__.py	0% <0%> (ø)	⬆️

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