Upgrade all requirements to their latest respective version.

requirements.txt

@@ -1,18 +1,18 @@
 # -*- coding: utf-8 -*-
 Kotti==1.3.0-alpha.4
-Babel==2.2.0
+Babel==2.3.3
 Beaker==1.8.0
 Chameleon==2.24
 FormEncode==1.3.0
 Mako==1.0.4
 MarkupSafe==0.23
 PasteDeploy==1.5.2
-Pillow==3.1.1
+Pillow==3.2.0
 Pygments==2.1.3
 SQLAlchemy==1.0.12
-SQLAlchemy-Utils==0.31.6
+SQLAlchemy-Utils==0.32.1
 Unidecode==0.04.19
-WebOb==1.5.1
+WebOb==1.6.0
 alembic==0.8.5
 appdirs==1.4.0
 bleach==1.4.2
@@ -21,8 +21,8 @@ colander==1.2
 deform==2.0a2
 docopt==0.6.2
 fanstatic==1.0a7
-filedepot==0.2.1
-html2text==2016.1.8
+filedepot==0.3.0
+html2text==2016.4.2
 html5lib==1.0b8
 iso8601==0.1.11
 js.angular==1.1.4
@@ -43,8 +43,8 @@ js.modernizr==2.5.3.1
 js.select2==3.4.1
 kotti-tinymce==0.5.4
 kotti-image==0.1.3
-lingua==4.8.1
-lxml==3.5.0
+lingua==4.9
+lxml==3.6.0
 peppercorn==0.5
 plone.scale==1.4.1
 polib==1.0.7
@@ -58,7 +58,7 @@ pyramid-mailer==0.14.1
 pyramid-mako==1.0.2
 pyramid-tm==0.12.1
 pyramid-zcml==1.0.0
-pytz==2016.1
+pytz==2016.3
 repoze.lru==0.6
 repoze.sendmail==4.2
 repoze.workflow==0.6.1