Fixed the following format errors:

diffviewer/management/commands/condensediffs.py:89:69: E226 missing whitespace around arithmetic operator

diffviewer/management/commands/condensediffs.py:90:27: E226 missing whitespace around arithmetic operator

diffviewer/opcode_generator.py:375:80: E501 line too long (80 > 79 characters)

diffviewer/opcode_generator.py:561:18: E127 continuation line over-indented for visual indent

diffviewer/opcode_generator.py:563:18: E127 continuation line over-indented for visual indent

diffviewer/parser.py:113:24: E221 multiple spaces before operator

diffviewer/parser.py:114:25: E221 multiple spaces before operator

diffviewer/parser.py:115:23: E221 multiple spaces before operator

diffviewer/parser.py:116:24: E221 multiple spaces before operator

diffviewer/parser.py:117:26: E221 multiple spaces before operator

diffviewer/parser.py:118:25: E221 multiple spaces before operator

diffviewer/parser.py:119:26: E221 multiple spaces before operator

diffviewer/parser.py:120:25: E221 multiple spaces before operator

diffviewer/testdata/new_src/helloworld.py:9:1: W391 blank line at end of file

Ran unit tests for diffviewer module, and ran pep8 again.