str is a string module with useful methods that don't exist in Lua's core
Added new methods:
str. unescape(value:string):string
Converts the HTML entities &, <, >, " and ' in string to their corresponding characters
str. escape(value:string):string
Converts the characters "&", "<", ">", '"', and "'" in string to their corresponding html entities
str. includes(value:string, substr:string):boolean
Determines wether the substring was found within the string
str. index_of(value:string, substr:string):number
Returns the position of the first occurrence of a specific substring
str. camel_case(value:string):string
Converts string to camel case
str. kebab_case(value:string):string
Converts string to kebab case
str. snake_case(value:string):string
Converts string to snake case
Refactored all code, including unit tests
Added two new methods:
str.find_last(value:string, match:string):string
Returns the index within the given string of the last occurrence of the specified value to match parameter. If the value is not found, it returns nil.
str.truncate(value:string, options: table):string
Truncates string if it's longer than the size value passed by parameter.