V0.2.0

• The blocks now use the stdout and stdin buses
• Print-str blocks: The string can now be set as a parameter
• Input-bit-echo
• Many examples added:
  • Cowsay
  • ANSI
  • Matrix
  • Calculator (acumulator)
  • Calculator (expresion)
  • Calculator (Terminal)
  • Calculator (Stack)
  • 2x1 bits ram test
  • Not truth table

This blocks are experimental. Their interface will be changed in future releases