Refactor cell selection out of renderer

The terminal now has a `renderable_cells()` function that returns a
`RenderableCellIter` iterator. This allows reuse of the cell selection
code by multiple renderers, makes it testable, and makes it
independently optimizable.

The render API now takes an `Iterator<Item=IndexedCell>` to support both
the new renderable cells iterator and the `render_string()` method which
generates its own iterator.

The `vim_large_window_scoll` ref test was added here because it provides
a nice large and busy grid to benchmark the cell selection with.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index aa9275c2..8f08303b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,8 +19,8 @@
 #![feature(drop_types_in_const)]
 #![feature(unicode)]
 #![feature(step_trait)]
+#![cfg_attr(test, feature(test))]
 #![feature(core_intrinsics)]
-#![feature(test)]
 #![allow(stable_features)] // lying about question_mark because 1.14.0 isn't released!
 
 #![feature(proc_macro)]