Fix and optimize algorithms

[zStupan]

• Fixed DE implementation, which was inconsistent with the pseudocode.
• Added inbounds macros to speed up array access
• Updated tests to cover these changes.

[codecov-commenter]

Codecov Report

Base: 94.79% // Head: 99.00% // Increases project coverage by +4.21% 🎉

Coverage data is based on head (073bea9) compared to base (5a5e17f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #14      +/-   ##
==========================================
+ Coverage   94.79%   99.00%   +4.21%     
==========================================
  Files          14       14              
  Lines         288      301      +13     
==========================================
+ Hits          273      298      +25     
+ Misses         15        3      -12     

Impacted Files	Coverage Δ
src/optimization/de.jl	100.00% <100.00%> (+4.65%)	⬆️
src/optimization/pso.jl	100.00% <100.00%> (+2.27%)	⬆️
src/rule.jl	100.00% <0.00%> (+12.82%)	⬆️
src/feature.jl	90.90% <0.00%> (+18.18%)	⬆️
src/attribute.jl	90.90% <0.00%> (+18.18%)	⬆️

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