Log message:
Update ruby-sshkit to 1.8.1.

## 1.8.1

  * Change license to MIT, thanks to all the patient contributors who gave
    their permissions.

## 1.8.0

  * add SSHKit::Backend::ConnectionPool#close_connections
    [PR #285](https://github.com/capistrano/sshkit/pull/285)
    @akm
  * Clean up rubocop lint warnings
    [PR #275](https://github.com/capistrano/sshkit/pull/275)
    @cshaffer
    * Prepend unused parameter names with an underscore
    * Prefer “safe assignment in condition”
    * Disambiguate regexp literals with parens
    * Prefer `sprintf` over `String#%`
    * No longer shadow `caller_line` variable in `DeprecationLogger`
    * Rescue `StandardError` instead of `Exception`
    * Remove useless `private` access modifier in `TestAbstract`
    * Disambiguate block operator with parens
    * Disambiguate between grouped expression and method params
    * Remove assertion in `TestHost#test_assert_hosts_compare_equal` that \ 
compares something with itself
  * Export environment variables and execute command in a subshell.
    [PR #273](https://github.com/capistrano/sshkit/pull/273)
    @kuon
  * Introduce `log_command_start`, `log_command_data`, `log_command_exit` \ 
methods on `Formatter`
    [PR #257](https://github.com/capistrano/sshkit/pull/257)
    @robd
    * Deprecate `@stdout` and `@stderr` accessors on `Command`
  * Add support for deprecation logging options.
    [README](README.md#deprecation-warnings),
    [PR #258](https://github.com/capistrano/sshkit/pull/258)
    @robd
  * Quote environment variable values.
    [PR #250](https://github.com/capistrano/sshkit/pull/250)
    @Sinjo - Chris Sinjakli
  * Simplified formatter hierarchy.
    [PR #248](https://github.com/capistrano/sshkit/pull/248)
    @robd
    * `SimpleText` formatter now extends `Pretty`, rather than duplicating.
  * Hide ANSI color escape sequences when outputting to a file.
    [README](README.md#output-colors),
    [Issue #245](https://github.com/capistrano/sshkit/issues/245),
    [PR #246](https://github.com/capistrano/sshkit/pull/246)
    @robd
    * Now only color the output if it is associated with a tty,
      or the `SSHKIT_COLOR` environment variable is set.
  * Removed broken support for assigning an `IO` to the `output` config option.
    [Issue #243](https://github.com/capistrano/sshkit/issues/243),
    [PR #244](https://github.com/capistrano/sshkit/pull/244)
    @robd
    * Use `SSHKit.config.output = SSHKit::Formatter::SimpleText.new($stdin)` instead
  * Added support for `:interaction_handler` option on commands.
    [PR #234](https://github.com/capistrano/sshkit/pull/234),
    [PR #242](https://github.com/capistrano/sshkit/pull/242)
    @robd
  * Removed partially supported `TRACE` log level.
    \ 
[2aa7890](https://github.com/capistrano/sshkit/commit/2aa78905f0c521ad9f697e7a4ed04ba438d5ee78)
    @robd
  * Add support for the `:strip` option to the `capture` method and strip by \ 
default on the `Local` backend.
    [PR #239](https://github.com/capistrano/sshkit/pull/239),
    [PR #249](https://github.com/capistrano/sshkit/pull/249)
    @robd
    * The `Local` backend now strips by default to be consistent with the \ 
`Netssh` one.
    * This reverses change \ 
[7d15a9a](https://github.com/capistrano/sshkit/commit/7d15a9aebfcc43807c8151bf6f3a4bc038ce6218) \ 
to the `Local` capture API to remove stripping by default.
    * If you require the raw, unstripped output, pass the `strip: false` option: \ 
`capture(:ls, strip: false)`
  * Simplified backend hierarchy.
    [PR #235](https://github.com/capistrano/sshkit/pull/235),
    [PR #237](https://github.com/capistrano/sshkit/pull/237)
    @robd
    * Moved duplicate implementations of `make`, `rake`, `test`, `capture`, \ 
`background` on to `Abstract` backend.
    * Backend implementations now only need to implement `execute_command`, \ 
`upload!` and `download!`
    * Removed `Printer` from backend hierarchy for `Local` and `Netssh` backends \ 
(they now just extend `Abstract`)
    * Removed unused `Net::SSH:LogLevelShim`
  * Removed dependency on the `colorize` gem. SSHKit now implements its own ANSI \ 
color logic, with no external dependencies. Note that SSHKit now only supports \ 
the `:bold` or plain modes. Other modes will be gracefully ignored. \ 
[#263](https://github.com/capistrano/sshkit/issues/263)
  * New API for setting the formatter: `use_format`. This differs from `format=` \ 
in that it accepts options or arguments that will be passed to the formatter's \ 
constructor. The `format=` syntax will be deprecated in a future release. \ 
[#295](https://github.com/capistrano/sshkit/issues/295)
  * SSHKit now immediately raises a `NameError` if you try to set a formatter \ 
that does not exist. [#295](https://github.com/capistrano/sshkit/issues/295)

Log message:
Add SHA512 digests for distfiles for security category

Problems found locating distfiles:
	Package f-prot-antivirus6-fs-bin: missing distfile fp-NetBSD.x86.32-fs-6.2.3.tar.gz
	Package f-prot-antivirus6-ws-bin: missing distfile fp-NetBSD.x86.32-ws-6.2.3.tar.gz
	Package libidea: missing distfile libidea-0.8.2b.tar.gz
	Package openssh: missing distfile openssh-7.1p1-hpn-20150822.diff.bz2
	Package uvscan: missing distfile vlp4510e.tar.Z

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Update ruby-sshkit to 1.7.1.

## 1.7.1

  * Fix a regression in 1.7.0 that caused command completion messages to be \ 
removed from log output. @mattbrictson

## 1.7.0

  * Update Vagrantfile to use multi-provider Hashicorp precise64 box - remove \ 
URLs. @townsen
  * Merge host ssh_options and Netssh defaults @townsen
    Previously if host-level ssh_options were defined the Netssh defaults
    were ignored.
  * Merge host ssh_options and Netssh defaults
  * Fixed race condition where output of failed command would be empty. @townsen
    Caused random failures of \ 
`test_execute_raises_on_non_zero_exit_status_and_captures_stdout_and_stderr`
    Also fixes output handling in failed commands, and generally buggy output.
  * Remove override of backtrace() and backtrace_locations() from ExecuteError. \ 
@townsen
    This interferes with rake default behaviour and creates duplicate stacktraces.
  * Allow running local commands using `on(:local)`
  * Implement the upload! and download! methods for the local backend

Log message:
Update ruby-sshkit to 1.6.1.

## 1.6.0

  * Fix colorize to use the correct API (@fazibear)
  * Lock colorize (sorry guys) version at >= 0.7.0

## 1.6.0 (Yanked, because of colorize.)

  * Force dependency on colorize v0.6.0
  * Add your entries here, remember to credit yourself however you want to be
    credited!
  * Remove strip from capture to preserve whitespace. Nick Townsend
  * Add vmware_fusion Vagrant provider. Nick Townsend
  * Add some padding to the pretty log formatter

## 1.5.1

  * Use `sudo -u` rather than `sudo su` to switch users. Mat Trudel

## 1.5.0

  * Deprecate background helper - too many badly behaved pseudo-daemons. Lee Hambley
  * Don't colourize unless $stdout is a tty. Lee Hambley
  * Remove out of date "Known Issues" section from README. Lee Hambley
  * Dealy variable interpolation inside `as()` block. Nick Townsend
  * Fixes for functional tests under modern Vagrant. Lewis Marshal
  * Fixes for connection pooling. Chris Heald
  * Add `localhost` hostname to local backend. Adam Mckaig
  * Wrap execptions to include hostname. Brecht Hoflack
  * Remove `shellwords` stdlib dependency Bruno Sutic
  * Remove unused `cooldown` accessor. Bruno Sutic
  * Replace Term::ANSIColor with a lighter solution. Tom Clements
  * Documentation fixes. Matt Brictson

## 1.4.0

https://github.com/capistrano/sshkit/compare/v1.3.0...v1.4.0

  * Removed `invoke` alias for \ 
[`SSHKit::Backend::Printer.execute`](https://github.com/capistrano/sshkit/blob/master/lib/sshkit/backends/printer.rb#L20). \ 
This is to prevent collisions with
  methods in capistrano with similar names, and to provide a cleaner API. See \ 
[capistrano issue 912](https://github.com/capistrano/capistrano/issues/912) and \ 
[issue 107](https://github.com/capistrano/sshkit/issues/107) for more details.
  * Connection pooling now uses a thread local to store connection pool, giving \ 
each thread its own connection pool. Thank you @mbrictson see \ 
[#101](https://github.com/capistrano/sshkit/pull/101) for more.
  * Command map indifferent towards strings and symbols thanks to @thomasfedb \ 
see [#91](https://github.com/capistrano/sshkit/pull/91)
  * Moved vagrant wrapper to `support` directory, added ability to run tests \ 
with vagrant using ssh. @miry see \ 
[#64](https://github.com/capistrano/sshkit/pull/64)
  * Removed unnecessary require `require_relative '../sshkit'` in \ 
`lib/sshkit/dsl.rb` prevents warnings thanks @brabic.
  * Doc fixes thanks @seanhandley @vojto

Log message:
Add ruby-sshkit package version 1.3.0.

A comprehensive toolkit for remotely running commands in a structured
manner on groups of servers.