a default set of characters to exclude and their replacement values that prevents
any curly or square brackets, forward or backslashes, commas, dashes, fullstops,
empty spaces and special characters where special characters are replaced with empty
string and the rest with underscore
a default set of characters to exclude and their replacement values that prevents any curly or square brackets, forward or backslashes, commas, dashes, fullstops, empty spaces and special characters where special characters are replaced with empty string and the rest with underscore