Upgrade 0.6.0 (#29)

* Moved to Traits and removed all function pointers
  * Preliminary work to RTK opmode
  * Other minor improvements

Signed-off-by: Guillaume W. Bres <guillaume.bressaix@gmail.com>

Author: gwbres

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gnss-rtk"
-version = "0.5.0"
+version = "0.6.0"
 license = "MPL-2.0"
 authors = ["Guillaume W. Bres <guillaume.bressaix@gmail.com>"]
 description = "GNSS position solver"