• implement gojq.ToInt and gojq.ToFloat64 for converting number values
• fix destructuring alternative operator (?//) to reset variables of
  later alternatives, and to propagate break and halt errors
• fix update-assignment operator against object with overlapping paths
• fix delpaths function to delete ancestor paths before descendant paths
• fix getpath function against string input
• fix indexing and slicing a number literal written after a unary operator
• fix slice indices of floating point numbers for jq compatibility
• fix date and time functions against fractional, non-finite, and out of range numbers
• fix strptime function to accept the zero time instant
• fix match, test, and capture functions to support array arguments
• fix match function to report an empty match after a non-empty one
• fix split/1 function against empty input string
• fix math functions against large number literals like 1e1000
• fix jn/2 and yn/2 functions to avoid long recurrence on large orders
• fix abs function against non-numbers for jq compatibility
• fix isnan function to return false for non-numbers for jq compatibility
• fix halt_error function not to print a newline after non-string values
• fix --argjson and --jsonargs options to reject empty and multiple JSON values
• fix --stream option error message against unterminated input
• fix JSON parse error message after a large value in non-seekable input like stdin
• fix offset of YAML parse error on multi-byte characters
• fix panic on continuing iteration after an invalid path error
• fix data race on input iterator when running code concurrently
• fix add function to handle a nil map and slice as the first value
• support destructuring alternative operator (?//) in reduce and foreach syntax
• allow optional operator followed by alternative operator without spaces (.a?//1)
• improve performance of function calls by avoiding copies of scope values,
  and path tracking in path, paths, |=, and del by reducing allocations