added .editorconfig [ci skip]

Author: eddelbuettel

.editorconfig

@@ -0,0 +1,21 @@
+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Matches multiple files with brace expansion notation
+# 4 space indentation
+[*.{c,cpp,h,hpp,R,r}]
+indent_style = space
+indent_size = 4
+
+# Tab indentation (no size specified)
+[Makefile]
+indent_style = tab
+

ChangeLog

@@ -1,3 +1,9 @@
+2018-04-02  Dirk Eddelbuettel  <edd@debian.org>
+
+	* .editorconfig: Added support for editorconfig.org
+	* .clang_format: Removed
+	* .dir-locals.el: Removed
+
 2018-03-31  Dirk Eddelbuettel  <edd@debian.org>
 
         * inst/include/Rcpp/sprintf.h (Rcpp): Remove parens [gcc8 warning]