Changed to intuitive casting, removed dtype tests from basic test class

[coquelin77]

Description

The dtype comparison was removed as the basic tests works with numpy, which does safe casting instead of intuitive casting. other changes were adjustments for types

Issue/s resolved:

Changes proposed:

• change from safe casting to intuitive casting (this come with the possibility of loss during the conversion)

Type of change

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Due Diligence

• All split configurations tested
• Multiple dtypes tested in relevant functions
• Documentation updated (if needed)
• Updated changelog.md under the title "Pending Additions"

Does this change modify the behaviour of other functions? If so, which?

no

[codecov]

Codecov Report

Merging #598 into master will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #598      +/-   ##
==========================================
- Coverage   97.48%   97.46%   -0.02%     
==========================================
  Files          77       77              
  Lines       15429    15396      -33     
==========================================
- Hits        15041    15006      -35     
- Misses        388      390       +2     

Impacted Files	Coverage Δ
heat/core/tests/test_exponential.py	100.00% <100.00%> (ø)
heat/core/tests/test_rounding.py	100.00% <100.00%> (ø)
heat/core/tests/test_suites/basic_test.py	90.90% <100.00%> (-0.44%)	⬇️
heat/core/tests/test_suites/test_basic_test.py	100.00% <100.00%> (ø)
heat/core/tests/test_trigonometrics.py	100.00% <100.00%> (ø)
heat/core/tests/test_types.py	100.00% <100.00%> (ø)
heat/core/types.py	94.84% <100.00%> (+0.51%)	⬆️
heat/spatial/tests/test_distances.py	100.00% <100.00%> (ø)
heat/spatial/distance.py	95.74% <0.00%> (-1.60%)	⬇️

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[ClaudiaComito]

Looks good to me! Does the promote_types() documentation need an update?

[Markus-Goetz]

• Changelog needs an update

Claudia's comment:

• Update to the docstring with double quotation marks

[coquelin77]

* Changelog needs an update

Claudia's comment:

* Update to the docstring with double quotation marks

docstrings have double quotation marks now, changelog is updated