[chirp_users] CHIRP 0.1.7b6

Hi all,

I just posted beta6 with these changes:

- Show collisions by color instead of notifications - Fix export to file when name contains spaces - Add a write-through memory cache on ic9x

The memory cache isn't quite done yet, as it doesn't maintain memories that are blank, which means whenever you need to resync or load from the cache, it tries to fetch the blank ones again. This will be fixed, but probably won't be too noticeable on full radios.

Thanks!