Log Message:
py-mercurial: update to 4.5.

Mercurial 4.5 (2018-02-01)

1.1. New Features

1.1.1. revert --interactive

The revert command now accepts the flag --interactive to allow reverting only \ 
some of the changes to the specified files.

1.1.2. Accessing hidden changesets

Set config option 'experimental.directaccess = True' to access hidden changesets \ 
from read only commands.

1.1.3. githelp extension

The githelp extension provides the hg githelp command. This command attempts to \ 
convert a git command to its Mercurial equivalent. The extension can be useful \ 
to Git users new to Mercurial.

1.1.4. Largefiles changes

    largefiles: add a 'debuglfput' command to put largefile into the store
    largefiles: add support for 'largefiles://' url scheme
    largefiles: allow to run 'debugupgraderepo' on repo with largefiles
    largefiles: convert EOL of hgrc before appending to bytes IO
    largefiles: explicitly set the source and sink types to 'hg' for lfconvert
    largefiles: modernize how capabilities are added to the wire protocol

1.2. hgweb changes

hgweb now shows more information about commits: phase (if it's not public), \ 
obsolescence status (with a short explanation and links to the successors) and \ 
instabilities (e.g. orphan, phase-divergent or content-divergent).

Client-side graph code has been simplified by delegating more work to the \ 
backend, so /graph page is now more in sync with /log page, visually and \ 
feature-wise. Unfortunately, this code change means that 3rd-party themes for \ 
4.5+ are required to have graphentry.tmpl template available (copy it from the \ 
base theme if you don't use %include and then reference it in map file) and \ 
render entries in graph.tmpl -- look at one of the core themes to see what it \ 
needs to look like. JS functions that create graph vertices and edges are now \ 
available in Graph.prototype, making it possible to call the original functions \ 
from custom theme-specific functions if needed.

Graph now shows different symbols for normal, branch-closing, obsolete and \ 
unstable commits, and marks currently checked out commit with a circle around \ 
its graph node.

There's also now json-graph API endpoint that can be used for rendering commit \ 
graph in 3rd-party applications.

1.2.1. Other Changes

    When interactive revert is run against a revision other than the working \ 
directory parent, the diff shown is the diff to <em>apply</em> to \ 
the working directory, rather than the diff to <em>discard</em> from \ 
the working copy. This is in line with related user experiences with 'git' and \ 
appears to be less confusing with 'ui.interface=curses'.
    Let 'hg rebase' avoid content-divergence by skipping obsolete changesets \ 
(and their descendants) when they are present in the rebase set along with one \ 
of their successors but none of their successors is in destination.
    A new experimental config flag, 'rebase.experimental.inmemory', makes rebase \ 
perform an in-memory merge instead of doing it on-disk in the working copy.

    The HGPLAINEXCEPT environment variable can now include color to allow \ 
automatic output colorization in otherwise automated environments.
    A new unamend command in uncommit extension which undoes the effect of the \ 
amend command by creating a new changeset which was there before amend and \ 
moving the changes that were amended to the working directory.
    A '--abort' flag to merge command to abort the ongoing merge.
    An experimental flag '--rev' to 'hg branch' which can be used to change \ 
branch of changesets.
    bundle2 read I/O significantly improved
    bundle2 memory use significantly reduced during read
    clonebundle: it is now possible to serve the clonebundle using a git-lfs \ 
compatible server.

    templatefilters: add slashpath() to convert path separator to slash (issue5572)
    A new experimental config flag, 'inline-color-diff', adds within-line color \ 
diff capacity
    histedit: add support to output nodechanges using formatter to help with \ 
editor integrations

1.3. Backwards Compatibility Changes

    log --follow-first -rREV, which is deprecated, now follows the first parent \ 
of merge revisions from the specified REV just like log --follow -rREV.

    log --follow -rREV FILE.. now follows file history across copies and renames.
    transaction: register summary callbacks only at start of transaction

    hgweb's graph view no longer supports browsers that lack <canvas> support
    hgweb: only include graph-related data in jsdata variable on /graph pages

    graphlog: add another graph node type, unstable, using character *
    remove: print message for each file in verbose mode only while using '-A'

1.4. Bug Fixes

    Bookmark, whose name is longer than 255, can again be exchanged again \ 
between 4.4+ client and servers (issue5165)

    The convert extension works with bzr < 2.6.0 again (issue5733)

    Mercurial will now attempt to use hardlinks on NTFS on Windows (issue4580)

    The revset x^:: is now correctly parsed as (x^):: instead of being an error \ 
(issue5764)

    Setting the diff.noprefix configuration option no longer breaks the --stat \ 
flag on hg diff (issue5759)

    hg outgoing now honors :pushurl paths from hgrc (issue5365)

    log: translate column labels at once (issue5750)

    patch: improve heuristics to not take the word diff as header (issue1879)

    templater: look up symbols/resources as if they were separated (issue5699)
    http and ssh: support for emitting extra debug logs about requests as they happen

1.5. API Changes

    bundlerepo.bundlerepository.bundle and \ 
bundlerepo.bundlerepository.bundlefile are now prefixed with an underscore.
    Rename bundlerepo.bundlerepository.bundlefilespos to _cgfilespos.
    dirstate no longer provides a 'dirs()' method. To test for the existence of \ 
a directory in the dirstate, use 'dirstate.hasdir(dirname)'.
    mapping does not contain all template resources. use context.resource() in \ 
template functions.

    text=False|True option is dropped from the vfs interface because of Python 3 \ 
compatibility issue. Use util.tonativeeol/fromnativeeol() to convert EOL \ 
manually.

    wireproto.streamres.__init__ no longer accepts a reader argument. Use the \ 
gen argument instead.
    exchange.getbundlechunks() now returns a 2-tuple instead of just an iterator.
    bundle2 parts are no longer seekable by default
    memfilectx: the changectx argument is now mandatory in constructor