editor: Fix large pastes and handle fast input

- Control characters and escape sequences are separated regardless
  of input speed.

BUGS

@@ -1,6 +1,4 @@
 Current:
-- Input can be lost when typing quickly and diff-edit is busy.
-  Seen with rapid undo while diffing.
 - Error sometimes when paging to the bottom of the file.
 
 
@@ -8,6 +6,8 @@ Fixed:
 - Interface freezing often.
 - Fix scrolling.
 - When largest line grows the bounding box should grow.
+- Input can be lost when typing quickly and diff-edit is busy.
+  Seen with rapid undo while diffing.
 
 
 Won't fix:

TODO

@@ -4,7 +4,6 @@ Todo:
 - Colourise file name.
 - Search.
 - Search and replace.
-- Large pastes.
 
 
 Done:
@@ -31,6 +30,7 @@ Done:
 - Right align the left editor.
 - Overwrite mode.
 - Bulk indent/dedent.
+- Large pastes.
 
 
 Shelved:

setup.py

@@ -18,4 +18,4 @@ setup(name="diff-edit",
       entry_points={"console_scripts": ["diff-edit=diff_edit:main"]},
       install_requires=[
           "pygments==2.10.0", "docopt==0.6.2",
-          "fill3 @ git+https://github.com/ahamilton/eris@v2022.01.28#subdirectory=fill3"])
+          "fill3 @ git+https://github.com/ahamilton/eris@v2022.02.13#subdirectory=fill3"])