2.0.1

Changes:

• cmd/seqls - Detect symlinks to directories and don't interpret them as discovered sequences

2.0.0: Merge pull request #2 from justinfx/range_refactor

Changes:

• Major refactor to the underlying logic of resolving ranges. Use an optimized storage and iteration approach, in order to
  handle arbitrarily large ranges. Avoids memory allocation crashes, and very slow construction of FrameSet/FileSequence

Known Issues:

• While creating a FrameSet from a massive range like "1-10000000000x2" will be very quick, creating
  FrameSets from multi-ranges with massive components like "20,50,60-10000000000" may be slow.
  Improvements are still needed to the process of detecting unique values in the previously added
  range components.
• Invert/Normalize functions are not as optimized as they could be. While they are much faster now for the common case of source
  ranges like "1-10x2,50-100x3", they are significantly slower for less common cases where the source range is a massive amount
  of individual values like "1,2,3,4,...,100000"