remove cloneArray() function
remove removeAt() function
removeItem() now return null instead of false when the first param is not an array
remove unique() function
change the category of binarySearch() to array
rename parseTimestamp() to parseSeconds()
fix bug of toNumber() function
rename isNumericString() to isNumeric()
fix bug of byte2Size() function
fix bug of getExtension() function
change the category of queryString()  to uncategorized
remove getHost(), getHostPort(), getParameter(), getParamters(), getPath(), getProtocol(), getSuffix() functions
fix misc bugs of builtin helper functions
add test scripts for helper functions
update helper config presets
update package config and make script with the newly added test scripts
add function descriptions
update README document
fix timezone bug of datetime2Timestamp() function
add test page for browser testing