doc-front-page: include the index in the TOC This will help important content to stand forward.

doc-front-page: add a title to the part about the extension We'll rework this section more in depth, but I would like it to have a title first to have it show up in the table of content.

doc-front-page: add a feature summary at the beginning of the page

doc-front-page: mention the mailing list in the documentation It is an important tool to keep people up to date.

doc-front-page: move installation instruction earliero This is important for user.

doc-front-page: move introduction before the table of content This should make a friendlier landing.

doc: simplify the reference to in-core features This should do the whole thing lighter.

doc: be less dramatic about changeset immutability Quoting Phillipe: "This is not a Tolkien Novel".

doc: clarify the introduction sentence

topics: allow use a --current when setting a topic This patch allow to use the current flag which can be used by user set existing revs to the current topic.

topic: make --clear + topicname invalid The two flags are mutually exclusive.

topics: add a current flag to display current topic This patch adds a current flag which can be used by user to display the current topic.