Add changes since 4.0.2

doc/changes.rst

+============================================
+Changes from 4.0.3-rc3 to 4.0.3 (2015-02-17)
+============================================
+
+* No changes.
+
+================================================
+Changes from 4.0.3-rc2 to 4.0.3-rc3 (2015-02-11)
+================================================
+
+- Superseded objects are now expired immediately.
+
+Bugs fixed
+----------
+
+- 1462_ - Use first/last log entry in varnishncsa.
+- 1539_ - Avoid panic when expiry thread modifies a candidate object.
+- 1637_ - Fail the fetch processing if the vep callback failed.
+- 1665_ - Be more accurate when computing client RX_TIMEOUT.
+- 1672_ - Do not panic on unsolicited 304 response to non-200 bereq.
+
+.. _1462: https://www.varnish-cache.org/trac/ticket/1462
+.. _1539: https://www.varnish-cache.org/trac/ticket/1539
+.. _1637: https://www.varnish-cache.org/trac/ticket/1637
+.. _1665: https://www.varnish-cache.org/trac/ticket/1665
+.. _1672: https://www.varnish-cache.org/trac/ticket/1672
+
+
+================================================
+Changes from 4.0.3-rc1 to 4.0.3-rc2 (2015-01-28)
+================================================
+
+Changes since 4.0.3-rc1:
+
+- Assorted documentation updates.
+
+Bugs fixed
+----------
+
+- 1479_ - Fix out-of-tree builds.
+- 1566_ - Escape VCL string question marks.
+- 1616_ - Correct header file placement.
+- 1620_ - Fail miss properly if out of backend threads. (Also 1621_)
+- 1628_ - Avoid dereferencing null in VBO_DerefBusyObj().
+- 1629_ - Ditch rest of waiting list on failure to reschedule.
+- 1660_ - Don't attempt range delivery on a synth response
+
+.. _1479: https://www.varnish-cache.org/trac/ticket/1479
+.. _1566: https://www.varnish-cache.org/trac/ticket/1578
+.. _1616: https://www.varnish-cache.org/trac/ticket/1616
+.. _1620: https://www.varnish-cache.org/trac/ticket/1620
+.. _1621: https://www.varnish-cache.org/trac/ticket/1621
+.. _1628: https://www.varnish-cache.org/trac/ticket/1628
+.. _1629: https://www.varnish-cache.org/trac/ticket/1629
+.. _1660: https://www.varnish-cache.org/trac/ticket/1660
+
+
+============================================
+Changes from 4.0.2 to 4.0.3-rc1 (2015-01-15)
+============================================
+
+Changes since 4.0.2:
+
+- Support older autoconf (< 2.63b) (el5)
+- A lot of minor documentation fixes.
+- bereq.uncacheable is now read-only.
+- obj.uncacheable is now readable in vcl_deliver.
+- [varnishadm] Prefer exact matches for backend.set_healthy. Bug 1349_.
+- Hard-coded -sfile default size is removed.
+- [packaging] EL6 packages are once again built with -O2.
+- [parameter] fetch_chunksize default is reduced to 16KB. (from 128KB)
+- Added std.time() which converts strings to VCL_TIME.
+- [packaging] packages now Provide strictABI (gitref) and ABI (VRT major/minor) for VMOD use.
+
+Bugs fixed
+----------
+
+* 1378_ - Properly escape non-printable characters in varnishncsa.
+* 1596_ - Delay HSH_Complete() until the storage sanity functions has finished.
+* 1506_ - Keep Content-Length from backend if we can.
+* 1602_ - Fix a cornercase related to empty pass objects.
+* 1607_ - Don't leak reqs on failure to revive from waitinglist.
+* 1610_ - Update forgotten varnishlog example to 4.0 syntax.
+* 1612_ - Fix a cornercase related to empty pass objects.
+* 1623_ - Fix varnishhist -d segfault.
+* 1636_ - Outdated paragraph in Vary: documentation
+* 1638_ - Fix panic when retrying a failed backend fetch.
+* 1639_ - Restore the default SIGSEGV handler during pan_ic
+* 1647_ - Relax an assertion for the IMS update candidate object.
+* 1648_ - Avoid partial IMS updates to replace old object.
+* 1650_ - Collapse multiple X-Forwarded-For headers
+
+.. _1349: https://www.varnish-cache.org/trac/ticket/1349
+.. _1378: https://www.varnish-cache.org/trac/ticket/1378
+.. _1596: https://www.varnish-cache.org/trac/ticket/1596
+.. _1506: https://www.varnish-cache.org/trac/ticket/1506
+.. _1602: https://www.varnish-cache.org/trac/ticket/1602
+.. _1607: https://www.varnish-cache.org/trac/ticket/1607
+.. _1610: https://www.varnish-cache.org/trac/ticket/1610
+.. _1612: https://www.varnish-cache.org/trac/ticket/1612
+.. _1623: https://www.varnish-cache.org/trac/ticket/1623
+.. _1636: https://www.varnish-cache.org/trac/ticket/1636
+.. _1638: https://www.varnish-cache.org/trac/ticket/1638
+.. _1639: https://www.varnish-cache.org/trac/ticket/1639
+.. _1647: https://www.varnish-cache.org/trac/ticket/1647
+.. _1648: https://www.varnish-cache.org/trac/ticket/1648
+.. _1650: https://www.varnish-cache.org/trac/ticket/1650
+
+
 ============================================
 Changes from 4.0.2-rc1 to 4.0.2 (2014-10-08)
 ============================================