Version 1.18:

Quality of life improvements:
* Reverse DNS lookup is now performed in the background, so it doesn't slow down the startup of pings anymore.
* Multiple hostnames can now be separated with spaces and/or commas.  Previously, it only allowed commas.
* PingTracer will now use the user-entered hostnames as graph labels when available instead of needing to do a reverse DNS lookup.  This can be most beneficial when pinging a list of manually-entered hostnames.
* Ping interval timing no longer is affected by changing the system's clock.

Version 1.17:

* Starting pings with an empty "Host" field will now log an error instead of throwing an exception.
* If the `-h` argument does not match an existing configuration, a new one is created.

The command line arguments list has been extended and slightly modified:
```
Arguments:
    -h <value>
        Load a saved configuration with Display Name or Host field matching <value>.
        If a matching configuration is not found, one will be created.
    -4
        (Use with -h) This indicates the "Prefer IPv4" checkbox must be checked.
    -6
        (Use with -h) This indicates the "Prefer IPv4" checkbox must be unchecked.
    -t0
        (Use with -h) This indicates the "Trace Route" checkbox must be unchecked.
    -t1
        (Use with -h) This indicates the "Trace Route" checkbox must be checked.
    -l x,y,w,h
        The window will be moved to the specified location and size.
        "w" and "h" parameters are optional.
    -s
        Pinging will begin automatically.
    -m
        The ping graphs will be maximized.
```

Version 1.16:

* Graphs can no longer be scrolled past the edge of the ping response buffer (as determined by the option "Number of ping responses to cache in memory for each host:").  This eliminates the issue where you could scroll past the edge of the buffer and see data repeated.
* Added a "Log Successes" checkbox which operates like "Log Failures", but for successful pings.
* Stopping pings should be a little more responsive when a long delay between pings is used.

Version 1.15.2:

* The `-m` command line flag to start maximized is no longer ignored.

Version 1.15.1:

* The `Tools` menu now has a `Reset Window Size` option which returns the window to the default size, now that closing and reopening the application doesn't do that anymore.

Version 1.15:

* The program will now remember its position between runs.
* If the program's window center is offscreen upon startup, it will be moved to the center of the nearest screen.

Actual version 1.14 release:

* Command line arguments now allow preferential selection of a saved configuration based on whether it prefers IPv4 or IPv6.

Discontinued use of Thread.Abort() to control threads. Should help pr…

…event a bug where the Stop button freezes the app on some systems.

Version 1.12.1:

* Keyboard shortcuts are more likely to work when pressed, as more parts of the form now listen for them.
* Added key binds `9`, `0`, `-`, ` ` as aliases for Home, End, PageUp, PageDown (for usability on keyboards that have fewer dedicated keys).

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