Add optional callback for activity changes

[amelchio]

This allows the client to know about external activity changes as soon as they are reported by the Harmony Hub.

[amelchio]

Hi @iandday!

Can you please let us know whether this repo is still maintained?

I would prefer not to create another fork so please take a little time within the next week to let us know the status of your project .

Thanks!

[iandday]

Hi amelchio,
I was traveling for work this week and didnt have any time to look through these, I just browsed through the code changes and they look great! I'm going to take a closer look tomorrow and try them out on my hubs. If all goes well i'll push the new version, it'll be great to see the new functions in hass

[amelchio]

That's great to hear! There is no rush, just didn't want to wait indefinitely :)

[iandday]

these changes look great, thank you.

I removed the token functionality completely from all ha_* functions. I'm going to publish this as 1.0.17, there doesnt look to be to many changes to be made on the HASS module to remove all references to auth tokens.

[amelchio]

Thank you, that's very nice. I will get my Home Assistant PR updated so we can soon enjoy these improvements :)