Improved Typestability

[behinger]

• removed duplicated function
• make link checker happy
• make linter happy
• generalized the test
• added packages to top
• added precompilation
• type stable designmatrix generation

Related issues

Closes #

Checklist

• I am following the contributing guidelines
• Tests are passing
• Lint workflow is passing
• Docs were updated and workflow is passing

[codecov]

Codecov Report

❌ Patch coverage is 90.32258% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.57%. Comparing base (0a5ccdb) to head (0fcd9b8).
⚠️ Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/condense.jl	88.23%	2 Missing ⚠️
src/designmatrix.jl	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #305      +/-   ##
==========================================
+ Coverage   63.33%   63.57%   +0.24%     
==========================================
  Files          23       23              
  Lines        1361     1370       +9     
==========================================
+ Hits          862      871       +9     
  Misses        499      499              

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[github-actions]

Benchmark Results

	main	0fcd9b8...	main / 0fcd9b8...
designmat/lin	0.192 ± 0.019 ms	0.181 ± 0.017 ms	1.06 ± 0.15
designmat/lmm	0.0885 ± 0.011 s	0.089 ± 0.0092 s	0.994 ± 0.16
effects/lin	1.06 ± 0.14 ms	0.783 ± 0.047 ms	1.35 ± 0.19
effects/lin_spl	27.2 ± 1.1 ms	24.6 ± 0.82 ms	1.11 ± 0.058
fit/lin	0.3 ± 0.053 ms	0.296 ± 0.023 ms	1.02 ± 0.2
fit/lin_deconv	1.54 ± 0.042 ms	1.52 ± 0.04 ms	1.01 ± 0.038
fit/lmm	0.07 ± 0.0016 s	0.0705 ± 0.00049 s	0.994 ± 0.024
time_to_load	3.37 ± 0.019 s	3.44 ± 0.045 s	0.98 ± 0.014

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).