Add port suffix to REALM variable
Add four methods needed for Cursor to implement Iterator. All trivial wrappers on existing methods.
Merge pull request #659 from sorbits/add-port-suffix

Add port suffix to REALM variable
Bug fix: Undefined variable: cache (Issue #705)
Restore removed line (Issue #705)
Add ignore directive {- -} to Preview class
Add donors
Merge pull request #709 from sam-at-github/cursor-implement-iterator

Adds four methods needed for Cursor to implement Iterator.
Merge branch 'dev' of https://github.com/bcosca/fatfree into dev
Removed unnecessary Countable dependency