PyUP - Dependency Update Scheduled daily dependency update on sunday (#651)

* Pin progressbar2 to latest version 3.38.0

* Update requirements.txt

* Update CHANGELOG.md

Author: pyup-bot

CHANGELOG.md

@@ -119,6 +119,7 @@ To release a new version, please update the changelog as followed:
 
 ### Dependencies Update
 - Update pytest from 3.5.1 to 3.6.0 (by @DEKHTIARJonathan and @pyup-bot in #647)
+- Update progressbar2 from 3.37.1 to 3.38.0 (by @DEKHTIARJonathan and @pyup-bot in #651)
 
 ### Contributors
 @lgarithm @DEKHTIARJonathan @2wins @One-sixth @zsdonghao

requirements.txt

@@ -1,6 +1,6 @@
 matplotlib>=2.2,<2.3
 numpy>=1.14,<1.15
-progressbar2>=3.37,<3.38
+progressbar2>=3.38,<3.39
 scikit-image>=0.13,<0.14
 scipy>=1.1,<1.2
 imageio>=2.3,<2.4