Tweak more warnings and notices

src/stream/slice.cpp

@@ -80,7 +80,7 @@ void slice_reader::seek(size_t slice) {
 
 bool slice_reader::open_file(const path_type & file) {
 	
-	log_info << "opening \"" << color::cyan << file.string() << color::reset << '"';
+	log_info << "Opening \"" << color::cyan << file.string() << color::reset << '"';
 	
 	ifs.close();
 	ifs.clear();

src/util/log.cpp

@@ -39,7 +39,7 @@ logger::~logger() {
 		case Debug:   std::cout << color::cyan   << buffer.str() << previous << "\n"; break;
 		case Info:    std::cout << color::white  << buffer.str() << previous << "\n"; break;
 		case Warning: {
-			std::cerr << color::yellow << "warning: " << buffer.str() << previous << "\n";
+			std::cerr << color::yellow << "Warning: " << buffer.str() << previous << "\n";
 			total_warnings++;
 			break;
 		}