v2.6.9 - Fix bug 565, error writing single bit in a tag

[Kyle]

Thanks to user @mikecflood who found this.  If you try to write a single bit, it will fail with an error on CIP-based PLCs.  This was something that I broke with the rethinking of how the amount to write per packet is calculated.  Much more testing was added to my internal tests against real hardware to make sure that this does not regress.

You can find the release in the usual place.

Best,

Kyle