package renaming: selector -> by.selector (step three - xpath pkg)
package renaming: selector -> by.selector (step four - parser pkg)
package renaming: selector -> by.selector (step five - by.selector.parser -> by.selector.preparser)
package renaming: selector -> by.selector (step six - moving up to by)
package renaming: selector -> by.selector (step seven - moving up to by)
package renaming: selector -> by.selector (step eight - moving up to by)
package renaming: selector -> by.selector (step nine - moving up to by)