Update specs for breaking changes and other deltas in 4.0

Author: chriseppstein

spec/basic/23_basic_value_interpolation-4.0/expected_output.css

@@ -0,0 +1,7 @@
+div {
+  a: helloworld;
+  a: hello world;
+  b: 12 3;
+  b: list;
+  b: 123;
+  b: string; }

spec/basic/23_basic_value_interpolation-4.0/input.scss

@@ -0,0 +1,8 @@
+div {
+  a: hello#{world};
+  a: hello #{world};
+  b: 12#{3};
+  b: type-of(12#{3});
+  b: #{12 + 111};
+  b: type-of(#{12 + 111});
+}

spec/basic/23_basic_value_interpolation-4.0/options.yml

@@ -0,0 +1,2 @@
+---
+:start_version: '4.0'

spec/basic/23_basic_value_interpolation/options.yml

@@ -0,0 +1,2 @@
+---
+:end_version: '3.5'

spec/libsass-closed-issues/issue_1093/argument/function-4.0/error

@@ -0,0 +1 @@
+Error: Invalid CSS after "...ion foo($bar:#{": expected expression (e.g. 1px, bold), was "}) {"

spec/libsass-closed-issues/issue_1093/argument/function-4.0/expected_output.css

@@ -0,0 +1,5 @@
+@function foo($bar:#{}) {
+  @return $bar;
+}
+
+$foo: foo();

spec/libsass-closed-issues/issue_1093/argument/function-4.0/input.scss

@@ -0,0 +1,2 @@
+---
+:start_version: '4.0'

spec/libsass-closed-issues/issue_1093/argument/function-4.0/options.yml

@@ -0,0 +1 @@
+65

spec/libsass-closed-issues/issue_1093/argument/function-4.0/status

@@ -0,0 +1,2 @@
+---
+:end_version: '3.5'