Refactor and console scripts

[rsgalloway]

• refactors module into package
• adds console_scripts entry point in setup (fixes lss on windows)
• adds util module
• minor formatting and linting
• bumps version to 0.8.0

Resolves Issue #73

[rsgalloway]

@nebukadhezer @eoyilmaz @dougrizeakos @broganross

any thoughts on these changes?