Fix #187, Ublox GPS fixes, see below:

This was a good one. Two problems
1) We've apparently always been using hte sparkfun API the wrong way, but
but we mostly got lucky.
2) Changing to use the API correctly (asyncronously) exposed a bug in
the library - fixed in a seperate commit

docs/software/TODO.md

@@ -6,14 +6,12 @@ You probably don't care about this section - skip to the next one.
 - make new android release
 - check in our modified arduino binaries
 - post bug on esp32-arduino
+- router mode
+- let users set arbitary params in android
 - encryption review findings writeup
-- NRF52 BLE
+- NRF52 BLE support
 - DSR
 
-- turn on modem-sleep mode - https://github.com/espressif/arduino-esp32/issues/1142#issuecomment-512428852
-
-
-
 # Medium priority
 
 Items to complete before the first beta release.