Mafese

+ Update examples for some Selector class
+ Replace evaluator module by evaluate method in Selector class.

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+ Add scaler module
+ Add DataTransformer class, that can handle the feature scaling for data
+ Set up a strict requirement for mealpy version 2.5.4

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+ Add more Optimizers in MhaSelector and MultiMhaSelector
+ Add more Regression and Classification objectives for fitness function
+ Add more Regression and Classification metrics for evaluate() function
+ Update logo and documents
+ Add more examples

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+ Fix bug load data from library.


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+ Remove some unknown datasets
+ Fix bug name in Kendall and Spearman functions of FilterSelector
+ Add Relief-based family to FilterSelector
+ Relief Original
+ Relief-F
+ VLS-Relief-F: Very Large Scale ReliefF
+ Remove rtf transfer function in MhaSelector
+ Update save results file of MultiMhaSelector's evaluate() function.
+ Update examples for some Selector class

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+ Rename some public functions to private functions
+ Add MultiMhaSelector class
+ Add Matplotlib library and support visualization for MultiMhaSelector class