v1.1.1

1.1.1

More script tests, more compiler bugs fixed. Same song, different verse.

• Added another set of script tests. (script_test.go)
• Fixed unary operators after a power operator, for example 2 ^ - -2. To fix this issue I totally rewrote how operators
  are parsed. (ast/parse_expr.go)
• Fixed semicolons immediately after a return statement. (ast/parse.go)
• Fixed an improper optimization or repeat-until loops. Basically if the loop had a constant for the loop condition its
  sense was being reversed (so a false condition resulted in the loop being compiled as a simple block, and a true condition
  resulted in an infinite loop). (compile.go)
• Fixed and in non-boolean contexts. Also and and or may produce slightly better code now. (compile_expr.go)