Commit unrolled range-based for loops

Merge pull request sass#2506 from mgreter/3.4-stable

Fix memory leak by removing previously unused code

Revert "Implement trailing commas in parameters and arguments"

This reverts commit 3d73948.

Add hotfix to avoid invalid nested :not selectors

Add script to unroll C++11 range based for loops

Add script to unroll C++11 range based for loops

Merge pull request sass#2336 from xzyfer/additional-hardening

Additional hardening

Merge pull request sass#2300 from mgreter/refactor/selector-schema

Refactor selector list and schema handling

Merge pull request sass#2292 from mgreter/bugfix/issue-2291

Fix issue with parent selector evaluation

Fix segfault when comparing pseudo selectors

Fixes sass#2289
Spec sass/sass-spec#1052