[features] Adding counter/bag-of-words representation of features

src/features.h

@@ -1,18 +1,19 @@
 #ifndef FEATURES_H
 #define FEATURES_H
 
-
- 
-
 #include <stdlib.h>
 #include <stdarg.h>
+#include "collections.h"
 #include "string_utils.h"
 
 #define FEATURE_SEPARATOR_CHAR "|"
 
+// Add feature to array
+
 void feature_array_add(cstring_array *features, size_t count, ...);
 
+// Add feature count to dictionary
 
- 
+bool feature_counts_update(khash_t(str_uint32) *features, char *feature, int count); 
 
 #endif