6.0.0

• Input can now be implicit. Implicit input is numeric (evaluated). It's triggered by any statement that tries to access elements below the bottom of the stack. See specification document for examples.
• Complex numbers were not displayed properly in Octave (only their real part was); now they are.
• Removed unrecognized tags when displaying error messages in Octave and old Matlab versions.
• Removed rng function and its predefined literals.
• Added predefined literal: '%.16g '
• im2col now allows a scalar n as second input, which gets transformed into [1 n] or [n 1]