update manual TODO

docs/TODO

@@ -6,10 +6,7 @@ If you see modifications to this file in git status, IGNORE them and do not comm
 
 
 === next steps ===
-    - spacecraft frame seems to be loaded in as local from config, but we have no
+    - add tests for 3d orbital elements in local frame
-        initialize_bodies() equivalent. could be a good time to implement local
-        coordinates in config file, since we have a bug already
-        - think of a test to validate spacecraft coords
     - maneuvering
         - still need to render the spacecraft orbits
         - display orbital elements in UI
@@ -44,13 +41,8 @@ If you see modifications to this file in git status, IGNORE them and do not comm
             eg) https://en.wikipedia.org/wiki/Runge%E2%80%93Kutta%E2%80%93Fehlberg_method
     - remove bodies on non closed orbits after they are a certain distance from
         the root body, or bary-center
-    - add and test 'satellite' objects that should not be in parents or have a
-        SOI
-    - see FIXME in src/simulation.cpp::calc_orbital_velocity about inclination
 
 === Simulation Config Files ===
-    - relative coordinates for child bodies
-        - can then use classic orbital elements instead of positions and velocities
     - a format with nested children would be nice
 
 === CTAGS ===
@@ -61,3 +53,4 @@ If you see modifications to this file in git status, IGNORE them and do not comm
 === rendering ===
     - for starters, the minimum scaling of objects should be replaced with some
         kind of billboard system
+        - partially implemented, still needs work