Remove many "versionchanged" items that didn't use the official markup,
but just some text embedded in the docs.
Also remove paragraph about implicit relative imports from tutorial.
diff --git a/Doc/library/textwrap.rst b/Doc/library/textwrap.rst
index 9b2ad11..243e43c 100644
--- a/Doc/library/textwrap.rst
+++ b/Doc/library/textwrap.rst
@@ -52,9 +52,7 @@
Note that tabs and spaces are both treated as whitespace, but they are not
equal: the lines ``" hello"`` and ``"\thello"`` are considered to have no
- common leading whitespace. (This behaviour is new in Python 2.5; older versions
- of this module incorrectly expanded tabs before searching for common leading
- whitespace.)
+ common leading whitespace.
For example::