The flate, gzip and zlib's NewWriterXxx functions no longer return an error.
The compiler will flag all affected code which must then be updated by hand.
-The os package's Exec and Time functions were removed. Callers should use the
-os/exec package and time.Now instead. The ShellExpand function was renamed to
-ExpandEnv. The NewFile function now takes a uintptr.
+The os package's Exec and Time functions were removed. Callers should use
+syscall.Exec and time.Now instead. The ShellExpand function was renamed to
+ExpandEnv. The NewFile function now takes a uintptr and the *File.Fd method
+returns a uintptr.
The runtime package's Type type and its methods have been removed.
Use the reflect package instead.