Log Message:
neomutt: update to 20200814.

2020-08-14  Richard Russon  <rich@flatcap.org>
* Security
  - Add mitigation against DoS from thousands of parts
* Features
  - Allow index-style searching in postpone menu
  - Open NeoMutt using a mailbox name
  - Add `cd` command to change the current working directory
  - Add tab-completion menu for patterns
  - Allow renaming existing mailboxes
  - Check for missing attachments in alternative parts
  - Add one-liner docs to config items
* Bug Fixes
  - Fix logic in checking an empty From address
  - Fix Imap crash in `cmd_parse_expunge()`
  - Fix setting attributes with S-Lang
  - Fix: redrawing of `$pager_index_lines`
  - Fix progress percentage for syncing large mboxes
  - Fix sidebar drawing in presence of indentation + named mailboxes
  - Fix retrieval of drafts when "postponed" is not in the mailboxes list
  - Do not add comments to address group terminators
  - Fix alias sorting for degenerate addresses
  - Fix attaching emails
  - Create directories for nonexistent file hcache case
  - Avoid creating mailboxes for failed subscribes
  - Fix crash if rejecting cert
* Changed Config
  - Add `$copy_decode_weed`, `$pipe_decode_weed`, `$print_decode_weed`
  - Change default of `$crypt_protected_headers_subject` to "..."
  - Add default keybindings to history-up/down
* Translations
  - 100% Czech
  - 100% Spanish
* Build
  - Allow building against Lua 5.4
  - Fix when sqlite3.h is missing
* Docs
  - Add a brief section on stty to the manual
  - Update section "Terminal Keybindings" in the manual
  - Clarify PGP Pseudo-header `S<id>` duration
* Code
  - Clean up String API
  - Make the Sidebar more independent
  - De-centralise the Config Variables
  - Refactor dialogs
  - Refactor: Help Bar generation
  - Make more APIs Context-free
  - Adjust the edata use in Maildir and Notmuch
  - Window refactoring
  - Convert libsend to use Config functions
  - Refactor notifications to reduce noise
  - Convert Keymaps to use STAILQ
  - Track currently selected email by msgid
  - Config: no backing global variable
  - Add events for key binding
* Upstream
  - Fix imap postponed mailbox use-after-free error
  - Speed up thread sort when many long threads exist
  - Fix ~v tagging when switching to non-threaded sorting
  - Add message/global to the list of known "message" types
  - Print progress meter when copying/saving tagged messages
  - Remove ansi formatting from autoview generated quoted replies
  - Change postpone mode to write Date header too
  - Unstuff `format=flowed`