Nuspell version 5.1.0

Added

• Add new API for finding dictionaries on the filesystem that uses facilities
  from C++17 std::filesystem.

Changed

• Simplify CLI tool and removed some unused features from it.

Deprecated

• Deprecate old API for finding dictionaries on the filesystem that used
  strings for paths.

Removed

• Remove man-page for CLI tool and dependency on pandoc. Just use --help to get
  manual for the CLI tool.