ann sent rm chan, use with care

CMakeLists.txt

 PROJECT(Corpus2Library)
 
 set(corpus2_ver_major "1")
-set(corpus2_ver_minor "2")
-set(corpus2_ver_patch "3")
+set(corpus2_ver_minor "3")
+set(corpus2_ver_patch "0")
 
 cmake_minimum_required(VERSION 2.8.0)
 

libcorpus2/ann/annotatedsentence.h

@@ -125,6 +125,14 @@ public:
 		return true;
 	}
 
+    /**
+     * Remove channel having a given name. Returns whether removed
+     * (will return false if no channel of the given name exists).
+     */
+    bool remove_channel(const std::string& name) {
+        return (channels_.erase(name) > 0);
+    }
+
 	const chan_map_t& all_channels() const {
 		return channels_;
 	}

swig/annotatedsentence.i

@@ -50,6 +50,12 @@ namespace Corpus2 {
     AnnotationChannel& get_channel(const std::string& name);
     const AnnotationChannel& get_channel(const std::string& name) const;
     bool add_channel(const std::string& name, const AnnotationChannel& chan);
+
+    /* Use with care. Note that get_channel returns a reference to the original
+       channel, hence it is strongly recommended to del the channel ref object
+       before attempting to call remove_channel. */
+    bool remove_channel(const std::string& name);
+
     const chan_map_t& all_channels() const;
 
     /* --------------------------------------------------------------------- */