Update requirements

-update requirements.txt and dev_requirements.txt to more recent version
-setup.py updated to Ubuntu 14.04 rather than 12.04 backports
-request at least Pillow 3.1.1 now (since this makes jpeg/png mandatory)

dev_requirements.txt

@@ -1,4 +1,6 @@
-check-manifest>=0.33
-setuptools-scm>=1.11.1
-twine>=1.8.1
-coverage>=4.2
+check-manifest >= 0.33
+twine >= 1.8.1
+coverage >= 4.2
+GitPython == 2.1.0
+setuptools-scm >= 1.11.1, != 1.13.1
+setuptools_scm_git_archive == 1.0

requirements.txt

@@ -1,9 +1,9 @@
 # requirements.txt can be used to replicate the developer's build environment
 # setup.py lists a separate set of requirements that are looser to simplify
 # installation
-ruffus==2.6.3
-Pillow==3.3.0
-reportlab==3.2.0
-PyPDF2==1.26
-img2pdf==0.2.1
-cffi==1.5.2
+ruffus == 2.6.3
+Pillow == 3.4.2
+reportlab == 3.3.0
+PyPDF2 == 1.26
+img2pdf == 0.2.1
+cffi == 1.9.1

setup.py

@@ -155,12 +155,12 @@ if not forced and command.startswith('install') or \
         command in ['check', 'test', 'nosetests', 'easy_install']:
     check_external_program(
         program='tesseract',
-        need_version='3.03',  # limited by Travis CI / Ubuntu 12.04 backports
+        need_version='3.03',  # limited by Travis CI / Ubuntu 14.04 backports
         package={'darwin': 'tesseract', 'linux': 'tesseract-ocr'}
     )
     check_external_program(
         program='gs',
-        need_version='9.15',  # limited by Travis CI / Ubuntu 12.04 backports
+        need_version='9.15',  # limited by Travis CI / Ubuntu 14.04 backports
         package='ghostscript'
     )
     check_external_program(
@@ -171,7 +171,7 @@ if not forced and command.startswith('install') or \
     )
     check_external_program(
         program='qpdf',
-        need_version='5.0.0',   # limited by Travis CI / Ubuntu 12.04 backports
+        need_version='5.1.1',   # limited by Travis CI / Ubuntu 14.04 backports
         package='qpdf',
         version_check_args=['--version']
     )
@@ -221,7 +221,7 @@ setup(
     ],
     install_requires=[
         'ruffus==2.6.3',        # pinned - ocrmypdf implements a 2.6.3 workaround
-        'Pillow>=3.1.0',        # Pillow is pretty stable
+        'Pillow>=3.1.1',        # Pillow is pretty stable
         'reportlab>=3.2.0',     # oldest released version with sane image handling
         'PyPDF2>=1.26',         # pure Python, so track HEAD closely
         'img2pdf>=0.2.1',       # pure Python, so track HEAD closely