fix FenomView constructor's return type
Squashed 'lib/Fenom/' changes from 14b8ad5..759f833

759f833 Merge branch 'fix-unary-before-brakets' into dev
ceedbd3 fix for expressions like "{if (!($a || $b))}" (were failing to compile), tests added

git-subtree-dir: lib/Fenom
git-subtree-split: 759f833ef47ee73f432a3dc1858fd3bc7cc8b600
updated fenom