Add changelog

[iKintosh]

IMPORTANT: Please do not create a Pull Request without creating an issue first.

Before submitting (checklist)

• Was this discussed/approved via a Github issue? (no need for typos and docs improvements)
• Did you read the contribution guide?
• Did you check the code style? make lint (poetry install -E style).
• Did you make sure to update the docs? We use Numpy format for all the methods and classes.
• Did you write any new necessary tests?
• Did you check that your code passes the unit tests pytest tests/ ?
• Did you add your new functionality to the docs?
• Did you update the CHANGELOG?

Type of Change

• Examples / docs / tutorials / contributors update
• Bug fix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves an existing feature)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Proposed Changes

• add changelog

Related Issue

PR review

Anyone in the community is free to review the PR once the tests have passed.
If we didn't discuss your PR in Github issues there's a high chance it will not be merged.

[codecov-commenter]

Codecov Report

Merging #60 (8a0a0c0) into master (2df0793) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #60   +/-   ##
=======================================
  Coverage   90.32%   90.32%           
=======================================
  Files          45       45           
  Lines        1975     1975           
=======================================
  Hits         1784     1784           
  Misses        191      191           

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