After upgrading the premium MacBook Pros a couple of months ago, Apple is preparing for the "back to school" season with a refreshed entry-level Pro and a small upgrade to the Air. The base 13" MacBook Pro now has a touch bar (originally, it launched with F keys) and Touch ID. The old dual-core CPU is gone, swapped out for an 8th generation quad-core Intel Core i5 (Coffee Lake). This model starts at $1,300 (128GB SSD), but there's a Core i7 version for $300 more and you can add more RAM (starts at 8GB, 16GB is $200 extra) and more storage too. Note that this MacBook Pro still uses...