SplitIterator, ExceptIterator Optimization & Clang compatibility

• Optimzed SplitIterator
• Optimzed ExceptIterator
• Fixed a clang issue with 7.0.0 where the build failed, due to the begin() function being called first, rather than end() causing an empty std::vector when toVector() was called.

The SplitIterator has been further optimized making it a very low overhead splitter for both C++14 and >= C++17. However, if C++17 or higher, it is approximately as much overhead as a take iterator. Otherwise (C++14), it is approximately 2,5 times slower than the >= C++17 variant.

The very first release of cpp-lazy

Current supported iterators:

• Enumerate
• Except
• Filter
• Map
• Range
• StringSplit
• Take/TakeWhile/slice
• Zip