Update docs.

CHANGELOG.asciidoc

@@ -23,6 +23,9 @@ Added
 - New `--quiet` argument for the `:debug-pyeval` command to not open a tab with
   the results. Note `:debug-pyeval` is still only intended for debugging.
 - The completion now matches each entered word separately.
+- A new command `:paste-primary` got added to paste the primary selection, and
+  `<Shift-Insert>` got added as a binding so it pastes primary rather than
+  clipboard.
 
 Changed
 ~~~~~~~

README.asciidoc

@@ -165,6 +165,7 @@ Contributors, sorted by the number of commits in descending order:
 * Jonas Schürmann
 * Panagiotis Ktistakis
 * Jimmy
+* Jakub Klinkovský
 * skinnay
 * error800
 * Zach-Button

doc/help/commands.asciidoc

@@ -833,6 +833,7 @@ How many steps to zoom out.
 |<<move-to-start-of-next-block,move-to-start-of-next-block>>|Move the cursor or selection to the start of next block.
 |<<move-to-start-of-prev-block,move-to-start-of-prev-block>>|Move the cursor or selection to the start of previous block.
 |<<open-editor,open-editor>>|Open an external editor with the currently selected form field.
+|<<paste-primary,paste-primary>>|Paste the primary selection at cursor position.
 |<<prompt-accept,prompt-accept>>|Accept the current prompt.
 |<<prompt-no,prompt-no>>|Answer no to a yes/no prompt.
 |<<prompt-yes,prompt-yes>>|Answer yes to a yes/no prompt.
@@ -1046,6 +1047,10 @@ Open an external editor with the currently selected form field.
 
 The editor which should be launched can be configured via the `general -> editor` config option.
 
+[[paste-primary]]
+=== paste-primary
+Paste the primary selection at cursor position.
+
 [[prompt-accept]]
 === prompt-accept
 Accept the current prompt.