Add command to quickly get the revision that last touched a line.

Only check status of modified files before annotate

This prevents being led astray by errors that are unrelated to what we're trying to do.

Fixed a couple issues with README

Add support for %-paths in commands auto-completion

Fix missing `endif`.

Correctly reset HGPLAIN after use.

Based on 0jrp0's comments (github issue #20).

Fix indenting

Improve support for moved files in diff commands.

Now we only check for moved files if we get an empty diff/cat output from
the normal codepath. We also do that for both sides of a diff, and for
the diff-summary commands.

Fix :Hgvdiff with a file that is a copy.

Previously,
    :Hg rename old new
    :" (A rename is a copy and a deletion of the file with the old name.)
    :edit new
    :Hgvdiff
    " "new: no such file in rev NNNN" was displayed in the window to the right of the new vertical split.

Now :Hgvdiff diffs new with old from the head revision.

Use winsaveview() and winrestview() to save a few lines of code.

Fix indenting

Use `HGPLAIN` for lawrencium buffers too.

Add `lawrencium_status_win_maxheight` setting.

Add options completion for `Hglog` and `Hglogthis`.

Allow passing extra arguments to Hglogthis and Hgvlogthis

* This allows for example :Hglogthis --follow and :Hglogthis -l 5

Add `:Hgchangestatus` to show the status of any changeset.

Only set `v:errmsg` for real errors, not exceptions.

Fixed for broken things after the reorganization.

Split plugin file into multiple extensions.

Merge pull request #11 from GitHub.