Filearray 0.1.6

Major changes:

• Removed c++11 from system requirement and Makevars
• Used TinyThreads instead of OpenMP to get parallel working on OSX
• Added as_filearray method, and support optional float
• Allows user-defined temporary file array path
• Added array proxy class, allowing arrays to lazy-evaluate simple operators (Thank @chrisdane, #5)
• Used fastmap to avoid environment look-up
• Disabled single indexing

Minor changes:

• fa_eval_ops allows dimension names
• Larger default buffer size to allow 2^20 in single partition

Bug fixes:

• Fixed fmap issues, using better guesses for default .input_size
• Fixed a memory bug caused when partition margin has elements greater than 1 and when FARR_subset_sequential is used
• Fixed endian issue on big-endian platforms (Thank @barracuda156, #7)