Property lookup fails in blocks. Fixes #1271
@extend fails in blocks. Fixes #1272
if...else if...else is broken. Fixes #1275
Merge branch 'pr/1274'

* pr/1274:
  @extend fails in blocks. Fixes #1272
Merge branch 'pr/1276'

* pr/1276:
  if...else if...else is broken. Fixes #1275
0.41.2
Regression for `selector` in 0.40.1. Fixes #1277
0.41.3
Merge 0.41.3