It’s called “Day-by-Day,” and it’s drawn and written by Chris Muir, an accidental cartoonist who lives in Florida. His story is one of extraordinary “underground success.” Back in May I sent him an email complimenting him on one of his cartoons. A few minutes later somebody calls my office and says “Is this Tim Condon? This is Chris Muir.” Heh! Couldda knocked me over with a feather! We chatted for a time and I found out…