[MRG] Release 0.9.3

[rflamary]

Types of changes

Motivation and context / Related issue

How has this been tested (if it applies)

PR checklist

• I have read the CONTRIBUTING document.
• The documentation is up-to-date with the changes I made (check build artifacts).
• All tests passed, and additional code has been covered with new tests.
• I have added the PR and Issue fix to the RELEASES.md file.

[codecov]

Codecov Report

Merging #594 (dc09b0a) into master (7950b11) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #594   +/-   ##
=======================================
  Coverage   96.75%   96.75%           
=======================================
  Files          77       77           
  Lines       15961    15961           
=======================================
  Hits        15443    15443           
  Misses        518      518