Just use the PyPI version of ocrmypdf in dockerfile

Apparently setuptools_scm_git_archive is ineffective on hub.docker.com
automatic build, it still can't find a version.

Dockerfile

@@ -63,9 +63,11 @@ RUN chmod 644 /usr/share/tesseract-ocr/tessdata/pdf.ttf
 
 # Install application and dependencies
 # In this arrangement Pillow and reportlab will be provided by the system
+# Even though ocrmypdf is locally present, pull from PyPI because
+# Dockerhub and setuptools_scm clash
 RUN . /appenv/bin/activate; \
   pip install --upgrade pip \
-  && pip install /application \
+  && pip install ocrmypdf \
   && pip install --no-cache-dir -r /application/test_requirements.txt
 
 # Remove the junk

RELEASE_NOTES.rst

@@ -15,15 +15,15 @@ New features
 -  Automatic page rotation (``-r``) is now available. It uses ignores any prior rotation information
    on PDFs and sets rotation based on the dominant orientation of detectable text. This feature is
    fairly reliable but some false positives occur especially if there is not much text to work with. (#4) 
--  Deskewing is now performed using Leptonica instead of unpaper. Leptonica deskews images faster and
+-  Deskewing is now performed using Leptonica instead of unpaper. Leptonica is faster and more reliable
-   more reliably than unpaper.
+   at image deskewing than unpaper.
 
 
 Fixes
 -----
 
 -  Fixed an issue where lossless reconstruction could cause some pages to be appear incorrectly
-   rotated in the page had a /Rotate tag applied (#50)
+   if the page was rotated by the user in Acrobat after being scanned (specifically if it a /Rotate tag)
 -  Fixed an issue where lossless reconstruction could misalign the graphics layer with respect to
    text layer if the page had been cropped such that its origin is not (0, 0) (#49)
 
@@ -31,7 +31,7 @@ Fixes
 Changes
 -------
 
--  Logging output much is now better
+-  Logging output is now much easier to read
 -  ``--deskew`` is now performed by Leptonica instead of unpaper (#25)
 -  libffi is now required
 -  Some changes were made to the Docker and Travis build environments to support libffi

ocrmypdf/tesseract.py

@@ -107,8 +107,8 @@ def get_orientation(input_file, language: list, timeout: float, log):
                 osd[parts[0].strip()] = parts[1].strip()
 
         oc = OrientationConfidence(
-            angle=int(osd['Orientation in degrees']),
+            angle=int(osd.get('Orientation in degrees', 0)),
-            confidence=float(osd['Orientation confidence']))
+            confidence=float(osd.get('Orientation confidence', 0)))
         return oc