update attributes TODO for items which we've already done or which we have thought better of doing

Author: jjallaire

TODO

@@ -82,47 +82,19 @@ Syntactic sugar
 
 Attributes
 
-    o   Allow externally specified build directory for sourceCpp (to support
-        caching across R sessions)
-    
-    o   Proactively detect types that can't be handled by as/wrap and print
-        a clearer error message
-     
     o   Add unit tests 
 
     o   Add random = false parameter to Rcpp::export once we support parsing
         key/value pairs in attribute parameters
 
-    o   Rcpp.package.skeleton should look for Rcpp::depends in cpp_files
-        and call inline plugins, etc. as necessary to create a package
-        that can build the cpp file(s). Note that packages exporting plugins
-        (e.g. Eigen, Armadillo) don't currently provide custom Makevars
-        so this won't quite work for those packages.
-
     o   Detect useDynLib .registration = TRUE and in that case emit .Call
         wrappers as symbols rather than strings w/ PACKAGE =
 
-    o   Solution for the problem of sharing/propagating typedefs to RcppExports 
-
-    o   Allow use of 'inline' keyword on exported functions
-
     o   Allow sourceCpp to build an entire directory
 
     o   Consider allowing local includes in sourceCpp (but compilation cache
         must pay mind to any local includes)
 
-    o   Support persistence of sourceCpp created functions across sessions
-        (either via long-lived temp dir or via environment persistence)
-
-    o   Additional high-level mechanism for specifying additional build
-        configuration (perhaps cxxflags and libs attributes)
-
-    o   Verify whether sourceCpp still needs to check for spaces in the path
-        of source file names on Windows
-
-    o   Consider adding -Wall and -Wpedantic for sourceCpp builds
-
-
 Testing
 
     o	all r* functions : rnorm, etc ...