adding nvector module

Author: ryanpavlick

src/pymap3d/__init__.py

@@ -44,6 +44,7 @@
     aer2dca,
     dca2aer,
 )
+
 from .ecef import (
     ecef2enu,
     ecef2enuv,
@@ -87,6 +88,8 @@
     geoc2geod,
 )
 
+from .nvector import geodetic2nvector, nvector2geodetic, ecef2nvector, nvector2ecef
+
 from .rcurve import parallel, meridian, transverse, geocentric_radius
 
 __all__ = [
@@ -141,8 +144,23 @@
     "authalic2geodetic",
     "geod2geoc",
     "geoc2geod",
+    "nvector2geodetic",
+    "geodetic2nvector",
+    "ecef2nvector",
+    "nvector2ecef",
+    "enu2dca",
+    "dca2enu",
+    "dca2ned",
+    "ned2dca",
+    "ecef2dca",
+    "dca2ecef",
+    "geodetic2dca",
+    "dca2geodetic",
+    "aer2dca",
+    "dca2aer",
 ]
 
+
 try:
     from .aer import aer2eci, eci2aer
     from .azelradec import azel2radec, radec2azel