Move TODO comments to github issue #271
pep8 style for inline comments
pep8: avoid multiple spaces
Make exceptions use "as" keyword. Fix blank line style issues.
pep8 fixes re blank lines
pep8 style fixes
Cleanup code from unused variables
Remove some unused imports
Use canonical indentation style according to pep8
Merge branch 'master' into more_pep8

Conflicts:
	Makefile

- Some pep8 violations were introduced in master, which I fixed.
- pysqlcipher issues modified Makefile in master interim, had to combine
  it with rule exclusions introduced by this patch
Merge pull request #280 from dionyziz/more_pep8

More pep8 fixes.