Fix reads to $C07X to return floating bus (broke at 7c95c0f)

1.28.4: Bumped version & updated History.txt

1.28.3: Fixed typos in History.txt

Added cmd line switch to disable vertical blend (AppleWin#616)

1.28.1: Bumped version & updated History.txt

Tweak to History.txt for 1.28.0

History.txt: fixed typo

1.27.12: Bump version & update History.txt + help

Fix for LC when //e (broken 13c3936)

1.27.9: Bump version & update History.txt