Lock output so that terminal escape sequences don't mix

terminal.py

@@ -150,6 +150,7 @@ class Jimterm:
         self.raw = raw
         self.bufsize = bufsize
         self.quote_re = None
+        self.output_lock = threading.Lock()
 
     def print_header(self, nodes, bauds, output = sys.stdout):
         for (n, (node, baud)) in enumerate(zip(nodes, bauds)):
@@ -225,6 +226,8 @@ class Jimterm:
                     data = data[1:]
                 first = False
 
+                self.output_lock.acquire()
+
                 if color != self.last_color:
                     self.last_color = color
                     os.write(sys.stdout.fileno(), color)
@@ -239,6 +242,9 @@ class Jimterm:
                     data = self.quote_raw(data)
 
                 os.write(sys.stdout.fileno(), data)
+
+                self.output_lock.release()
+
         except Exception as e:
             self.console.cleanup()
             sys.stdout.write(color)