If you were worried about going to prison for getting caught with marijuana in Arkansas, you can breathe a little easier today. Back in March, the Arkansas Legislature, backed by Gov. Mike Beebe, passed a law to reduce the penalties for possession of up to four ounces of marijuana. Starting today, a judge may place a person under probation for a year without formal charge, instead of the regular sentence of up to a year in jail and a $1,000 fine. This option is at the discretion of the judge, so…