Golf 171 released

• "Array" statements are now "set", so for example new-array is now new-set. This change is made to align the names of data structures better with their qualities and to make room for a new "array" structure that will be a direct-memory access structure. Please rename these statements in your code to be compatible with this and future versions.
• The limit for a number of subdirectories in file storage is now 64000, instead of previous 40000, significantly increasing the number of files that can be stored (theoretically by 240,000,000,000).