update changelog

changelog.org

@@ -1,6 +1,12 @@
 * v0.1.6
 - fix syntax used for ~{.union.}~ pragma in wrapped R types, old
   syntax not valid on modern Nim
+- fix up path logic for ~dyn.load~ in autogenerated R scripts. It now
+  uses the path to the R script as the base directory for the shared
+  library. This means the shared library must be in the same
+  directory. Feel free to update the path as needed in the
+  autogenerated R script by hand of course.
+- clarify raw vector test case and fix vector tests  
 * v0.1.5
 - handle Nim procedures that return void when using
   ={.exportR.}=. This is done by rewriting to a =SEXP= return type,