Merge branch 'patch-1' into 'master'

Dedication to E. Pipping

See merge request !427

(cherry picked from commit f0d33bc3)

b44118cc Dedication to E. Pipping

CHANGELOG.md

 # Release 2.6
 
+**This release is dedicated to Elias Pipping (1986-2017).**
+
 - New class `IntegralRange<integral_type>` and free standing function
   `range` added, providing a feature similar to Python's `range` function:
   ```