April-2023

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Implemented ability to have custom memory-boundary allocation to take advantage of SIMD instructions. This breaks backward-compatibility especially for views. Also, this justifies increasing the major version number
Bug fixes and code cleanup
Enhanced hello_world.cc and docs
Made multi-threading faster by streamlining locks
Made file I/O faster and more efficient
Implemented get_data_by_sel() for 11, 12, and 13 columns
Implemented CubicSplineFit visitor
Implemented ImpurityVisitor visitor
Added ignore_index option to sort functions to make index sorting optional
Implemented ExponentiallyWeightedVarVisitor visitor
Removed ExponentialRollAdopter
Implemented ExponentiallyWeightedCovVisitor visitor
Implemented ExponentiallyWeightedCorrVisitor visitor
Implemented ability to read files in chunks
Added arithmetic operators to DateTime
Changed KMeans to always calculate clusters -- interface change
Changed all std::is_arithmetic to supports_arithmetic
Implemented FixedAutoCorrVisitor visitor
Added option to SharpeRatioVisitor to also calculate Sortino Ratio
Implemented RVIVisitor visitor
Fixed moving averages to work with nan values in the beginning
Added options to sort to sort based on absolute values
Implemented LinregMovingMeanVisitor visitor