💄 Deprecate backspaceToBeginningOf{Word,Line}

Rename functions `backspaceToBeginningOfWord` to `deleteToBeginningOfWord` and
`backspaceToBeginningOfLine to `deleteToBeginningOfLine`.
Rename commands `editor:backspace-to-beginning-of-word` to
`delete-to-beginning-of-word` and `editor:backspace-to-beginning-of-line` to
`editor:delete-to-beginning-of-line`.

Fix #1791

keymaps/darwin.cson

@@ -103,16 +103,16 @@
   'alt-shift-right': 'editor:select-to-end-of-word'
 
   # Apple Specific
-  'cmd-backspace': 'editor:backspace-to-beginning-of-line'
-  'cmd-shift-backspace': 'editor:backspace-to-beginning-of-line'
-  'cmd-delete': 'editor:backspace-to-beginning-of-line'
+  'cmd-backspace': 'editor:delete-to-beginning-of-line'
+  'cmd-shift-backspace': 'editor:delete-to-beginning-of-line'
+  'cmd-delete': 'editor:delete-to-beginning-of-line'
   'ctrl-A': 'editor:select-to-first-character-of-line'
   'ctrl-E': 'editor:select-to-end-of-line'
   'cmd-left': 'editor:move-to-first-character-of-line'
   'cmd-right': 'editor:move-to-end-of-screen-line'
   'cmd-shift-left': 'editor:select-to-first-character-of-line'
   'cmd-shift-right': 'editor:select-to-end-of-line'
-  'alt-backspace': 'editor:backspace-to-beginning-of-word'
+  'alt-backspace': 'editor:delete-to-beginning-of-word'
   'alt-delete': 'editor:delete-to-end-of-word'
   'ctrl-a': 'editor:move-to-beginning-of-line'
   'ctrl-e': 'editor:move-to-end-of-line'

keymaps/emacs.cson

@@ -3,5 +3,5 @@
   'alt-F': 'editor:select-to-end-of-word'
   'alt-b': 'editor:move-to-beginning-of-word'
   'alt-B': 'editor:select-to-beginning-of-word'
-  'alt-h': 'editor:backspace-to-beginning-of-word'
+  'alt-h': 'editor:delete-to-beginning-of-word'
   'alt-d': 'editor:delete-to-end-of-word'

keymaps/linux.cson

@@ -65,7 +65,7 @@
   'ctrl-right': 'editor:move-to-end-of-word'
   'ctrl-shift-left': 'editor:select-to-beginning-of-word'
   'ctrl-shift-right': 'editor:select-to-end-of-word'
-  'ctrl-backspace': 'editor:backspace-to-beginning-of-word'
+  'ctrl-backspace': 'editor:delete-to-beginning-of-word'
   'ctrl-delete': 'editor:delete-to-end-of-word'
 
   # Sublime Parity

keymaps/win32.cson

@@ -63,8 +63,8 @@
   'ctrl-right': 'editor:move-to-end-of-word'
   'ctrl-shift-left': 'editor:select-to-beginning-of-word'
   'ctrl-shift-right': 'editor:select-to-end-of-word'
-  'ctrl-backspace': 'editor:backspace-to-beginning-of-word'
-  'ctrl-delete': 'editor:backspace-to-beginning-of-word'
+  'ctrl-backspace': 'editor:delete-to-beginning-of-word'
+  'ctrl-delete': 'editor:delete-to-beginning-of-word'
 
   # Sublime Parity
   'ctrl-a': 'core:select-all'