Clean up code

[henrikjacobsenfys]

Improve analysis, analysis1d and analysisbase, and add fix a few minor issues.

Closes #209

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (develop@886a0c6). Learn more about missing BASE report.

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #210   +/-   ##
==========================================
  Coverage           ?   97.90%           
==========================================
  Files              ?       52           
  Lines              ?     3583           
  Branches           ?      651           
==========================================
  Hits               ?     3508           
  Misses             ?       41           
  Partials           ?       34           

Flag	Coverage Δ
unittests	97.90% <100.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
src/easydynamics/analysis/analysis.py	93.86% <100.00%> (ø)
src/easydynamics/analysis/analysis1d.py	98.38% <100.00%> (ø)
src/easydynamics/analysis/analysis_base.py	100.00% <100.00%> (ø)
...easydynamics/convolution/analytical_convolution.py	100.00% <ø> (ø)
src/easydynamics/convolution/convolution.py	100.00% <ø> (ø)
src/easydynamics/convolution/convolution_base.py	100.00% <ø> (ø)
.../easydynamics/convolution/numerical_convolution.py	100.00% <100.00%> (ø)
...dynamics/convolution/numerical_convolution_base.py	97.36% <100.00%> (ø)
.../easydynamics/sample_model/component_collection.py	99.13% <100.00%> (ø)

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