DOLLAR-UNDERSCORE $_{fn} utility classes

These utility classes are used by other Intelliflex libraries and are not presently documented

clear: $_clear, clearNull: $_clearNull, copyClipboard: $_copyClipboard, findIn: $_findIn, findInGroup: $_findInGroup, getFrom: $_getFrom, getLength: $_getLength, getQueryParams: $_getQueryParams, getUnique: $_getUnique, insert: $_insert, isDefined: $_isDefined, isSame: $_isSame, nameSwap: $_nameSwap, num: $_num, num$: $_num$, oneOf: $_oneOf, replaceNulls: $_replaceNulls, search: $_search, toDecimal: $_toDecimal, toNumber: $_toNumber,