Additional commands: EOL delay, lower to upper translation, added mark parity

Added command line options:
-O, --eol-delay to have a separate delay for end of line
-U, --upper to enable translation of lower case alpha to upper case

Added ability to set mark parity.
Added ctrl-t U key sequence to allow enable/disable lower case alpha to
upper case during a session.
Updated Man page with command line options, ctrl-t sequences and
configuration file options.
Updated README.md, with above information.

README.md

@@ -36,7 +36,9 @@ when used in combination with [tmux](https://tmux.github.io).
  * Local echo support
  * Remap special characters (nl, cr-nl, bs, etc.)
  * Line timestamps
- * Support for delayed output
+ * Support for delayed output per transmitted character
+ * Support for delayed output per line
+ * Support for translation of lower case to upper case
  * Hexadecimal mode
  * Log to file
  * Autogeneration of log filename
@@ -66,6 +68,13 @@ The command-line interface is straightforward as reflected in the output from
       -s, --stopbits 1|2               Stop bits (default: 1)
       -p, --parity odd|even|none       Parity (default: none)
       -o, --output-delay <ms>          Character output delay (default: 0)
+      -O, --eol-delay <ms>             EOL output delay (default: 0)
+          --dtr-pulse-duration <ms>    DTR pulse duration (default: 100)
+      -n, --no-autoconnect             Disable automatic connect
+      -e, --local-echo                 Enable local echo
+      -t, --timestamp                  Enable line timestamp
+          --timestamp-format <format>  Set timestamp format (default: 24hour)
+      -L, --list-devices               List available serial devices
           --dtr-pulse-duration <ms>    DTR pulse duration (default: 100)
       -n, --no-autoconnect             Disable automatic connect
       -e, --local-echo                 Enable local echo
@@ -79,6 +88,7 @@ The command-line interface is straightforward as reflected in the output from
       -c, --color 0..255|none|list     Colorize tio text (default: 15)
       -S, --socket <socket>            Redirect I/O to file or network socket
       -x, --hexadecimal                Enable hexadecimal mode
+      -U, --upper                      Enable translation of lower case to upper
       -v, --version                    Display version
       -h, --help                       Display help
 
@@ -137,6 +147,7 @@ ctrl-t ? to list the available key commands.
 [20:19:12.041]  ctrl-t s   Show statistics
 [20:19:12.041]  ctrl-t t   Send ctrl-t key code
 [20:19:12.041]  ctrl-t T   Toggle line timestamp mode
+[20:19:12.041]  ctrl-t U   Toggle lower case alpha to upper case
 [20:19:12.041]  ctrl-t v   Show version
 ```