[ase-users] Dropping Python 2.6 in ase-3.14

[Jens Jørgen Mortensen]

Hi!

The next version of ASE will not support Python 2.6.  Hopefully this 
will not be a problem for anyone.  Good news is that we can now start 
using all the great 2.7 stuff:

     https://docs.python.org/3/whatsnew/2.7.html

Short summary:

*automatic numbering of the replacement fields: '{}'.format(117)
* set literals: {1, 2, 3}
* set and dict comprehensions
* OrderedDict and Counter types added to the collections module

Jens Jørgen