Added a unit test for HistoryItem.pr() in the case of non-verbose, non-expanded multiline commands

Also:
- Updated CHANGELOG to reflect that 0.9.13 release is planned for June 2019

Author: tleonhardt

CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.9.13 (TBD, 2019)
+## 0.9.13 (June TBD, 2019)
 * Bug Fixes
     * Fixed issue where the wrong terminator was being appended by `Statement.expanded_command_line()`
     * Fixed issue where aliases and macros could not contain terminator characters in their values

tests/test_history.py

@@ -281,6 +281,18 @@ def parser():
     return parser
 
 def test_multiline_histitem(parser):
+    from cmd2.history import History
+    line = 'multiline foo\nbar\n\n'
+    statement = parser.parse(line)
+    history = History()
+    history.append(statement)
+    assert len(history) == 1
+    hist_item = history[0]
+    assert hist_item.raw == line
+    pr_lines = hist_item.pr().splitlines()
+    assert pr_lines[0].endswith('multiline foo bar')
+
+def test_multiline_histitem_verbose(parser):
     from cmd2.history import History
     line = 'multiline foo\nbar\n\n'
     statement = parser.parse(line)