Log Message:
Update to 2.8:

This is a regularly scheduled feature release.

1.1. Core features

    hgweb: add revset syntax support to search
    hgweb: always run search when a query is entered (BC)
    hgweb (paper theme): add infinite scrolling to graph
    hgweb: show full date in rfc822 format in tooltips at shortlog page
    proxy: allow wildcards in the no proxy list (issue1821)
    pull: for pull --update with failed update, print hint if any
    rebase: preserve working directory parent (BC)
    sslutil: add a config knob to support TLS (default) or SSLv23 (BC) (issue4038)
    templatefilters: add short format for age formatting
    templater: support using templates with non-standard names from map file
    update: add error message for dirty non-linear update with no rev
    addremove: don't do full walks
    log: make file log slow path usable on huge repos
    subrepo: let the user choose to merge, keep local or keep remote subrepo \ 
revisions

1.2. Extension features

    convert-internals: introduce hg.revs to replace hg.startrev and --rev with a \ 
revset
    convert-internals: update source shamap when using filemap, just as when not \ 
using filemap
    factotum: clean up keychain for multiple hg repository authentication
    histedit: abort if there are multiple roots in "--outgoing" revisions
    mq: extract strip function as its standalone extension (issue3824)
    mq: look for modified subrepos when checking for local changes
    rebase: remove bailifchanged check from pullrebase (BC)
    shelve: add a shelve extension to save/restore working changes

1.3. Fixes

    pager: honour internal aliases
    patch: ensure valid git diffs if source/destination file is missing (issue4046)
    patch: Fix nullid for binary git diffs (issue4054)
    progress: stop getting stuck in a nested topic during a long inner step
    rebase: handle bookmarks matching revset function names (issue3950)
    rebase: preserve active bookmark when not at head (issue3813)
    rebase: preserve metadata from grafts of changes (issue4001)
    rebase: fix selection of base used when rebasing merge (issue4041)
    ui: send password prompts to stderr again (issue4056)