Rev 18 improvements and release of arm slot DLCs — PITCHvr™ Vision Steam update #1317429

PITCHvr Vision Rev 18 released. Includes: 1) Improvements to pitcher avatar especially finger positions. 2) Changed graphics for pitch release point and the tunnel zone to improve player recognition. Changed from checkboard to circular targets. 3) Changed the "arrow" graphics on the balls (when selected by the user) to better indicate the spin of the various pitches. 4) The build also includes release of three new Extended DLCs (High School, College and Pro) that include various pitcher are slots (overhand, side arm and submarine).