NEW YORK — When Brian Cashman spoke about Yoshinobu Yamamoto at the winter meetings, the general manager said that he feels “personal touches” are important to the Yankees’ courtship of the pitcher. Cashman had been referring to his September visit to Japan, during which he saw Yamamoto throw a no-hitter. Cashman added that he kept the ticket stub. The Yankees have since continued to sprinkle their pursuit with personal touches throughout two meetings with Yamamoto. One took place in Los Angeles on Dec. 11, while the most recent happened in Manhattan this past Sunday. On Thursday, Aaron Boone …