Generate CHANGELOG.md for 0.9.3

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Changelog for restic 0.9.3 (2018-10-13)
=======================================
The following sections list the changes in restic 0.9.3 relevant to
restic users. The changes are ordered by importance.
Summary
-------
* Fix #1935: Remove truncated files from cache
* Fix #1978: Do not return an error when the scanner is faster than backup
* Enh #1766: Restore: suppress lchown errors when not running as root
* Enh #1909: Reject files/dirs by name first
* Enh #1940: Add directory filter to ls command
* Enh #1967: Use `--host` everywhere
* Enh #2028: Display size of cache directories
* Enh #1777: Improve the `find` command
* Enh #1876: Display reason why forget keeps snapshots
* Enh #1891: Accept glob in paths loaded via --files-from
* Enh #1920: Vendor dependencies with Go 1.11 Modules
* Enh #1949: Add new command `self-update`
* Enh #1953: Ls: Add JSON output support for restic ls cmd
Details
-------
* Bugfix #1935: Remove truncated files from cache
When a file in the local cache is truncated, and restic tries to access data beyond the end of the
(cached) file, it used to return an error "EOF". This is now fixed, such truncated files are
removed and the data is fetched directly from the backend.
https://github.com/restic/restic/issues/1935
* Bugfix #1978: Do not return an error when the scanner is faster than backup
When restic makes a backup, there's a background task called "scanner" which collects
information on how many files and directories are to be saved, in order to display progress
information to the user. When the backup finishes faster than the scanner, it is aborted
because the result is not needed any more. This logic contained a bug, where quitting the
scanner process was treated as an error, and caused restic to print an unhelpful error message
("context canceled").
https://github.com/restic/restic/issues/1978
https://github.com/restic/restic/pull/1991
* Enhancement #1766: Restore: suppress lchown errors when not running as root
Like "cp" and "rsync" do, restic now only reports errors for changing the ownership of files
during restore if it is run as root, on non-Windows operating systems. On Windows, the error
is reported as usual.
https://github.com/restic/restic/issues/1766
* Enhancement #1909: Reject files/dirs by name first
The current scanner/archiver code had an architectural limitation: it always ran the
`lstat()` system call on all files and directories before a decision to include/exclude the
file/dir was made. This lead to a lot of unnecessary system calls for items that could have been
rejected by their name or path only.
We've changed the archiver/scanner implementation so that it now first rejects by name/path,
and only runs the system call on the remaining items. This reduces the number of `lstat()`
system calls a lot (depending on the exclude settings).
https://github.com/restic/restic/issues/1909
https://github.com/restic/restic/pull/1912
* Enhancement #1940: Add directory filter to ls command
The ls command can now be filtered by directories, so that only files in the given directories
will be shown. If the --recursive flag is specified, then ls will traverse subfolders and list
their files as well.
It used to be possible to specify multiple snapshots, but that has been replaced by only one
snapshot and the possibility of specifying multiple directories.
Specifying directories constrains the walk, which can significantly speed up the listing.
https://github.com/restic/restic/issues/1940
https://github.com/restic/restic/pull/1941
* Enhancement #1967: Use `--host` everywhere
We now use the flag `--host` for all commands which need a host name, using `--hostname` (e.g.
for `restic backup`) still works, but will print a deprecation warning. Also, add the short
option `-H` where possible.
https://github.com/restic/restic/issues/1967
* Enhancement #2028: Display size of cache directories
The `cache` command now by default shows the size of the individual cache directories. It can be
disabled with `--no-size`.
https://github.com/restic/restic/issues/2028
https://github.com/restic/restic/pull/2033
* Enhancement #1777: Improve the `find` command
We've updated the `find` command to support multiple patterns.
`restic find` is now able to list the snapshots containing a specific tree or blob, or even the
snapshots that contain blobs belonging to a given pack. A list of IDs can be given, as long as they
all have the same type.
The command `find` can also display the pack IDs the blobs belong to, if the `--show-pack-id`
flag is provided.
https://github.com/restic/restic/issues/1777
https://github.com/restic/restic/pull/1780
* Enhancement #1876: Display reason why forget keeps snapshots
We've added a column to the list of snapshots `forget` keeps which details the reasons to keep a
particuliar snapshot. This makes debugging policies for forget much easier. Please remember
to always try things out with `--dry-run`!
https://github.com/restic/restic/pull/1876
* Enhancement #1891: Accept glob in paths loaded via --files-from
Before that, behaviour was different if paths were appended to command line or from a file,
because wild card characters were expanded by shell if appended to command line, but not
expanded if loaded from file.
https://github.com/restic/restic/issues/1891
* Enhancement #1920: Vendor dependencies with Go 1.11 Modules
Until now, we've used `dep` for managing dependencies, we've now switch to using Go modules.
For users this does not change much, only if you want to compile restic without downloading
anything with Go 1.11, then you need to run: `go build -mod=vendor build.go`
https://github.com/restic/restic/pull/1920
* Enhancement #1949: Add new command `self-update`
We have added a new command called `self-update` which downloads the latest released version
of restic from GitHub and replaces the current binary with it. It does not rely on any external
program (so it'll work everywhere), but still verifies the GPG signature using the embedded
GPG public key.
By default, the `self-update` command is hidden behind the `selfupdate` built tag, which is
only set when restic is built using `build.go` (including official releases). The reason for
this is that downstream distributions will then not include the command by default, so users
are encouraged to use the platform-specific distribution mechanism.
https://github.com/restic/restic/pull/1949
* Enhancement #1953: Ls: Add JSON output support for restic ls cmd
We've implemented listing files in the repository with JSON as output, just pass `--json` as an
option to `restic ls`. This makes the output of the command machine readable.
https://github.com/restic/restic/pull/1953
Changelog for restic 0.9.2 (2018-08-06)
=======================================