Change default indentation in .editorconfig

Add dependencies folder to default stack and exceptions in .gitignore

.editorconfig

@@ -7,9 +7,9 @@ root = true
 #### Core EditorConfig Options ####
 
 # Indentation and spacing
-indent_size = 4
+indent_size = 3
 indent_style = tab
-tab_width = 4
+tab_width = 3
 
 # New line preferences
 end_of_line = crlf

.gitignore

@@ -425,5 +425,6 @@ FodyWeavers.xsd
 !/examples
 !/src
 !/tests
+!/dependencies
 !/tools
 !/*.[Ss][Ll][Nn]