v1.5.0

• Add countBy extensions to Array
• Add countBy extensions to Dictionary
• Add countBy extensions to Set
• Add usage documentation

v1.4.0

• Add combine method to Array
• No need to create the same functionality for Set and Dictionaries, since this combine scenario is just not fit for both of them

v1.3.0

• Add collapse extensions for Array, Set, and Dictionary
• Add usage for collapse method

v1.2.0

• Add sum extensions and its test cases for Array
• Add sum extensions and its test cases for Set
• Add sum extensions and its test cases for Dictionary

v1.1.0

• Add chunk method for Array, Set, and Dictionary
• Add test cases, minus for Dictionary's extension

v1.0.0

• Add average method for Array, Set, and Dictionary
• Add test cases