Add list of known issues and include a note on Dj 1.4 and sorl with that.

.travis.yml

@@ -5,12 +5,12 @@ python:
   - "3.2"
   - "3.3"
 env:
-    - DJANGO="Django==1.4" SOUTH="South>=0.8.4"
-    - DJANGO="Django==1.5" SOUTH="South>=0.8.4"
-    - DJANGO="Django==1.6" SOUTH="South>=0.8.4"
-    - DJANGO="https://www.djangoproject.com/download/1.7.b4/tarball/" SOUTH=""
+    - DJANGO="Django==1.4" SOUTH="South>=0.8.4" SORLTHUMBNAIL="sorl-thumbnail<11.12.1"
+    - DJANGO="Django==1.5" SOUTH="South>=0.8.4" SORLTHUMBNAIL="sorl-thumbnail>=11.12.1b"
+    - DJANGO="Django==1.6" SOUTH="South>=0.8.4" SORLTHUMBNAIL="sorl-thumbnail>=11.12.1b"
+    - DJANGO="https://www.djangoproject.com/download/1.7.b4/tarball/" SOUTH="" SORLTHUMBNAIL="sorl-thumbnail>=11.12.1b"
 install:
-  - pip install $DJANGO $SOUTH -r .travis/requirements.txt
+  - pip install $DJANGO $SOUTH $SORLTHUMBNAIL -r .travis/requirements.txt
 matrix:
     exclude:
         # Python 2.6 support has been dropped in Django 1.7

.travis/requirements.txt

 # Common denominators for testing
 Markdown>=2.2.0
 django-sekizai>=0.7
+
+# Removed for now because it is not universal as sorl is broken on
+# django 1.4: https://github.com/mariocesar/sorl-thumbnail/issues/255
+# sorl-thumbnail>=11.12.1b
+
 # Switch to Pillow and the dev version of sorl v12
-sorl-thumbnail>=11.12.1b
 Pillow
 # Notification system
 django-nyt>=0.9

docs/index.rst

@@ -17,6 +17,7 @@ Contents:
    settings
    tips
    release_notes
+   known_issues
 
 
 Indices and tables

docs/known_issues.rst

+Known Issues
+============
+
+Django 1.4
+----------
+
+In the requirements is stated ``sorl-thumbnail>11.12.1b`` which is the newest beta of sorl-thumbnail. However, you need to downgrade after.
+
+Django 1.7 and Python 2.6
+-------------------------
+
+Those are incompatible with each other and can never be combined as Dj 1.7 dropped Py 2.6 support.