tweaks to CHANGES.rst

CHANGES.rst

@@ -1,7 +1,7 @@
 pywb 0.33.0 changelist
 ~~~~~~~~~~~~~~~~~~~~~~
 
-* Client-Side Rewrite:
+* Client-Side Rewriting Improvements:
    - Video: More aggressive ``youtube-dl`` rewriting, try video query for any ``<object>`` with flashvars
    - proxy: disable most client side rewriting when in proxy mode, keep non-rewriting overrides (random, Date)
    - host relative extract: ``extract_orig()`` returns host-relative if url starts with ``/``
@@ -10,16 +10,16 @@ pywb 0.33.0 changelist
    - fix history check bug: support changing history to exact current origin.
    - add ``window.fetch()`` override
    - add ``srcset`` attribute rewriting
-   - adon't add ``X-Pywb-Requested-With`` to ``data:`` urls
+   - ajax: don't add ``X-Pywb-Requested-With`` header to ``data:`` urls
    - general JS fixes, add undefined checks before acccessing ``_wb_js``, top frame, and content frame.
 
-* Server-Side Rewrite:
+* Server-Side Rewriting Improvements:
    - www canonicalization: improve regex to include urls containing ``\r``
    - memento: fix potential duplicate memento headers
    - proxy: when in proxy mode, only rewrite headers related to encoding or cache
    - proxy: add special 'proxy_js' rewriter which defaults to no rewriting for proxy mode but allows custom JS rules to still be applied. Used for JS and embedded JS in html.
    - WbUrl: add new modifier form starting with ``$`` in addition to ending with ``_``, eg. ``/$mod:foo/http://example.com/``
-   - ajax: don't rewrite ``text/html`` responses to ajax requests.
+   - ajax: don't rewrite ``text/html`` responses retrieved by ajax requests (when ``X-Pywb-Requested-With`` header is present).
 
 * Static Handler: if ``wsgi.file_wrapper`` fails, fallback to direct streaming of static ocntent.