[requires.io] dependency update

Author: requires

requirements.txt

@@ -15,15 +15,15 @@ Flask==1.0.2
 github3.py==1.2.0
 inlineplz==0.42.10
 isort==4.3.4
-itsdangerous==0.24
+itsdangerous==1.0.0
 Jinja2==2.10               # via flask
 lazy-object-proxy==1.3.1
 logilab-common==1.4.2
 MarkupSafe==1.0          # via jinja2
 mccabe==0.6.1
 pep8-naming==0.7.0
 pep8==1.7.1
-prospector==1.1.3
+prospector==1.1.4
 pycodestyle==2.4.0        # via prospector
 pydocstyle==3.0.0
 pyflakes==2.0.0