Fix build?

Skip distance was being ignored because of an accidental cast to int

Fix MQTT last will and testament not consistently sending offline (ES…

…Presense#74)

* Fix lwt
* Update CHANGELOG.md

Fix bug w/ spaced names

Groundwork for ESPresense#53 (ESPresense#67)

- Potientaly breaking: room name is now lower cased, trimmed, and all whitespace replaced with underscores when put into mqtt (ESPresense#64)
- ANSI Colors Added to Serial
- Close/Left totally rewritten to find stuff quickly (uses NO filtering)
- Serial display for 'New' waits for 2nd packet before showing
- One Euro filter reoptimized to work for slow broadcasters (Tiles) as well as it previously did for quick (Phones/Watches)
- All time measurement made wraparound protected
- Make Arduino OTA disabled by default, but a setting
- Add a calibration section of settings with lots of knobs to twiddle
- Ignore microsoft and non Nearby Info apple packets (they are useless for tracking atm)
- Delete old fingerprints after configurable max age instead of waiting for MAX MACS and deleting the oldest

Fix malformed json ESPresense#64

Update CHANGELOG

Update CHANGELOG

Auto Updatie made a setting

Misc cleanup