Specifies chain pointer and reference to match calls exactly

Escapes '<' and '>' in zip_longest description

Merge pull request #73 from strega-nil/fix-cmakelists

Fix CMakeLists.txt install paths

Fixes const iteration for chain()

Fixes #65

Merge pull request #45 from nvander1/remove_std_iterator

Remove use of std::iterator

Removes this-> in starmap::iterator functions.

clang was getting confused by them, I don't know why.

Merge branch 'master' of https://github.com/ryanhaining/cppitertools

removes noexcept from accum iterator move