New:

• PR #787: :VimwikiRenameFile works for all directories: even
  wiki_root/diary/2019-12-11.md if current file is wiki_root/dir1/file.md.
• Issue #764: fenced code blocks are properly supported for markdown
  syntax i.e. more than 3 backticks, adds tilde support.
• PR #785: :VimwikiGoto completion works with part of filename and
  nested directories
• Add test framework (vader, vint, vim-testbed)
• Issue #769: Set default values for g:vimwiki_ext2syntax.
• PR #735: Make list-toggling work properly even when code blocks are
  embedded within the list in Markdown mode.
• PR #711: Allow forcing VimwikiAll2HTML with !
• PR #702: Make remapping documentation more accessible to newer vim users
• PR #673: Add :VimwikiGoto key mapping.
• PR #689: Allow vimwiki-option-diary_rel_path to be an empty string.
• PR #683: Improve layout and format of key binding documentation in
  README and include note about key bindings that may not work.
• PR #681: Prevent sticky type checking errors for old vim versions.
• PR #686: New option g:vimwiki_key_mappings that allow key mappings to
  be enabled/disabled by groups. Key mappings are also no longer
  overwritten if they are already defined.
• PR #675: Add option vimwiki-option-name to assign a per wiki name.
• PR #661: Add option g:vimwiki_auto_header to automatically generate
  a level 1 header for new wiki pages.
• PR #665: Integration with vimwiki_markdown gem
  https://github.com/patrickdavey/vimwiki_markdown
  This provides the vimwiki-option-html_filename_parameterization
  which alters the filenames vimiwiki checks against when running the
  html conversion. It also disables the deleting of html files which
  no longer match against a wiki file.
• PR #663: New option g:vimwiki_conceal_onechar_markers to control
  whether to show or hide single-character format markers.
• PR #636: Wiki local option vimwiki-option-exclude_files which is
  a list of patterns to exclude when checking or generating links.
• PR #644: Key mapping gnt to jump to the next open task.
• PR #643: Option g:vimwiki_toc_link_format to change how links are
  formatted in the TOC.
• PR #641: Option g:vimwiki_conceal_code_blocks to conceal preformatted
  text markers.
• PR #634: New options g:vimwiki_links_header and
  g:vimwiki_tags_header to customize the title string of generated
  sections. New option g:vimwiki_links_header_level and
  g:vimwiki_tags_header_level which allow the header level (1-6) of the
  generated links to be set. New option g:vimwiki_markdown_header_style
  which specifies the nuber of newlines after the created header for
  generated sections.
• PR #635: Wiki local options vimwiki-option-auto_generate_links and
  vimwiki-option-auto_generate_tags.
• Wiki local option vimwiki-option-links_space_char to replace spaces
  with a different character when creating a link.
• Allow increase/decrease header level to take a count.
• PR #637: Option g:vimwiki_table_reduce_last_col to not autoformat last
  column of a table.
• PR #629: New option g:vimwiki_toc_header_level to set the desired
  header level for the TOC.
• PR #616: Hex color codes are colored in HTML output.
• PR #573: Add HTML template variable %wiki_path% which outputs the path
  of the current file being converted to HTML.
• PR #529: Option g:vimwiki_markdown_link_ext to include the extension
  .md in generated links.
• PR #528: Add option g:vimwiki_create_link to prevent link creation
  with <CR>.
• PR #498: Option vimwiki-option-diary_caption_level which adds captions
  to the diary index based on headers.
• PR #377: Add horizontal alignment to tables.
• PR #202: Don't override or display errors for existing keymappings.
• PR #47: Optimize table formatting for large tables.
• PR #857: Make default template responsive
• PR #879: Generate links when diary & wiki dir are the same

Changed:

• Issue #796: Rename :VimwikiGenerateTags to :VimwikiGenerateTagLinks
• Issue #638: Rename :VimwikiDeleteLink to :VimwikiDeleteFile
• Issue #638: Rename :VimwikiRenameLink to :VimwikiRenameFile
• For all three above the old commands still works but is deprecated and
  will be removed in later versions.
• Set default vimwiki-option-list_margin = 0 for markdown syntax.
• Modify horizontal rule (thematic-breaks) syntax for markdown.

Removed:

• PR #698: Remove awa check triggering silent file edits.
• Options g:vimwiki_use_mouse and g:vimwiki_table_mappings. These are
  still present in the code for backwards compatibility but have been
  removed from the documentation and will be fully removed at a later
  point.

Fixed:

• Issue #90: :VimwikiRenameFile doesn't update links in diary.
• Issue #790: Allow tags before a header with markdown syntax.
• Issue #779: Vimwiki tags file meets ctags standard.
• Issue #781: Compatablity fixes for older versions of Vim.
• Issue #691: Allow :VimwikiGoBackLink to go back multiple times.
• Update MathJax CDN loading instructions.
• Issue #212: Don't treat comment characters within code blocks as
  headers.
• Issue #420: Add error handling to :VimwikiSearch
• PR #744: Fix typo in vimwiki_list_manipulation
• Issue #715: s:clean_url is compatible with vim pre 7.4.1546 (sticky type
  checking)
• Issue #729: Normalize links uses relative paths in diary pages for
  Markdown syntax. This previously only worked for the default syntax.
• Disable spell check in code and math inline/blocks.
• Properly handle markdown image links ![]()
• Issue #415: Expand iabbrev entries on <CR>.
• Issue #619: allow escaped characters in markdown links.
• Issue #240: Fix regex pattern for markdown []() links
• Issue #685: Error message for invalid user options fixed.
• Issue #481: Allow surrounding URLs with '<' '>'
• Issue #237: :VimwikiRenameFile now works for Markdown syntax
• Issue #612: GVim menu displayed duplicate names.
• Issue #456: Omnicompletion of wikilinks under Windows. Note: this should
  be considered a temporary fix until #478 is closed.
• Issue #654: Fix :VimwikiShowVersion command.
• PR #634: Removed extra newlines that were inserted before/after
  generated links.
• Issue #543: Allow commands related to opening index files or diary pages
  to take a count, modify keymapping behavior, and fix discrepancies in
  the documentation.
• Issue #539: The option g:vimwiki_url_maxsave now only affects raw
  URLs (wiki links are excluded).
• Issue #438: Fix creation of visually selected links on diary pages.
• Issue #404: Don't conceal strikethrough character in tables.
• Issue #318: Markdown syntax bold, italic, and italic/bold are now
  rendered correctly.
• Issue #835: Pressing enter on the dash of a markdown list causes an error.
• Issue #876: E684: list index out of range: 0, when creating a link containing a ..
• Issue #803: :VimwikiGenerateLinks for subdirectory only
• Issue #776: Command [count]o can't repeat in vimwiki