Added missing blank lines after sphinx directives.
Modified cube.summary() to handle unicode cube attributes.
Merge pull request #361 from esc24/unicode_attr

Modified cube.summary() to handle unicode cube attributes.
Merge pull request #370 from esc24/doc_tweaks

Added missing blank lines after sphinx directives.
Attempt to fix pep8 issues in cube.py. long lines in code example docstrings remain.
Merge pull request #373 from cpelley/saveloadpp_bugfix

Bug fix of pp saving, closses #277
Merge pull request #374 from cpelley/reformat

NetCDF PEP8 fixes.
Fix to extract_by_trajectory() docstring indentation.
Merge pull request #371 from esc24/cube_pep8

PEP8 improvements to iris.cube
multicube2netcdf
enhanced multi2netcdf