Pylinac

- Batch processing of logs added via a new class.
- ~4x speedup of fluence calculations.

- A Varian MLC picket fence analysis module was added
- This will analyze EPID PF images of any size and either orientation.

A new version of pylinac is here.

- Log Analyzer module added
-This module reads Dynalogs and Trajectory logs from Varian linear accelerators. See docs: http://pylinac.readthedocs.org/en/latest/log_analyzer.html
- Starshot module
-The profile circle now aligns with the lines found.
-Recursive option added to analyze for recursive searching of a reasonable wobble.
- Image module reworking (internal)
- Image now has a cleaner interface and properties

- Demo files were not included when installed from pip

-Python 2.7 support dropped.
Python 3 has a number of features that Python 2 does not,
and because this project is just getting started, I didn't want to support Python 2,
and then eventually drop it as Python 3 becomes more and more mainstream.
-Internal overhaul.
Modules are now in the root folder.
A core module with specialized submodules was created with a number of various tools.
-Demo files were assimilated into one directory with respective subdirectories.
-VMAT module can now handle HDMLC images.
-CBCT module was restructured and is much more reliable now.
-method names normalized, specifically the `return_results` method, which had different names
in different modules.
-Lots of tests added; coverage increased dramatically.