Serial Ports
    The package core.io contains classes to access serial ports, both physical and virtual, on the
    local machine.
Serial Ports
    The class core.io.SerialPort represents a serial port. There are two ways to create
    core.io.SerialPort objects. Either by retrieving a list by calling the
    core.Array<core.io.SerialPort> serialPorts() function and picking one, or by passing a system-specific identifier
    to the constructor of core.io.SerialPort (i.e. COMX on Windows, or /dev/ttySX on
    Linux).
    The core.io.SerialPort class has the following members in addition to == and hash:
- 
        core.Maybe<core.io.SerialStream> open(core.io.SerialOptions options)Open the serial port. Provide configuration options. 
- 
        core.Str name()Get the name of the port. 
As mentioned previously, the following function can be used to enumerate all serial ports on the system:
- 
        core.Array<core.io.SerialPort> serialPorts()Find available serial ports. 
Serial Streams
    The open method of core.io.SerialPort returns a core.io.SerialStream
    object that represents an open serial port. The core.io.SerialOptions class is used to
    represent options of the serial connection. It has the following members:
- 
        init(core.io.SerialOptions other)Copy constructor. 
- 
        init()Create default options (9600 baud, no parity, 1 stop bit). 
- 
        init(core.Nat baudrate)Create default options with custom baud rate, no parity, 1 stop bit. 
- 
        init(core.Nat baudrate, core.Nat byteSize, core.io.SerialParity parity, core.io.SerialStopBits stopBits)Create with all options. 
- 
        core.Nat baudrateBaudrate. 
- 
        core.Nat byteSizeBits per byte. 
- 
        core.io.SerialParity parityParity. 
- 
        core.io.SerialStopBits stopBitsStop bits. 
    The core.io.SerialStream has the following members:
- 
        core.io.SerialIStream input()Get the input stream. 
- 
        core.io.SerialOStream output()Get the output stream. 
- 
        void close()Close the stream. Also closes the input/output streams. 
- 
        core.io.SerialOptions options()Get options. 
- 
        void options(core.io.SerialOptions options)Set options. 
