Update packages

Merge pull request dresende#762 from dresende/fix_hasmany_keys

Fix hasmany 'has' accessor to work with custom keys

Merge pull request dresende#761 from dresende/has-many-fix

Fix has many 'has' accessor failing when join table has duplicate entries

Merge pull request dresende#758 from dresende/better-chaining

Make [.find|.where|.all] synonyms & chain multiple times

Version 3.1.0 - adds to property def

Update readme

Merge pull request dresende#700 from li-qiang/master

Fix bug for windows path

DRY up code & convert spaces to tabs