Moved config init code to subs, no MANIFEST for Git

Ticket: 104 (eb29821a-4247-4f54-b851-f6ee696fde56)

  - Made the init code structured by subs in lib/Debug/Fork/Tmux/Config.pm:

    - Put paths init code to _default_tmux_paths();

    - Tests for _default_tmux_paths();

    - Put fqfn init code to _default_tmux_fqfn().

Ticket: 130 (2aee61ba-6027-4e41-8bd3-c06a74684dcc)

  - Missing test files from git snapshot's MANIFEST
    ('Warning: the following files are missing in your kit'):

    - Changes

    - t/00-compile.t

    - t/000-report-versions.t

    - xt/author/critic.t

    - xt/author/pod-spell.t

    - xt/author/test-eol.t

    - xt/release/changes_has_content.t

    - xt/release/cpan-changes.t

    - xt/release/dist-manifest.t

    - xt/release/distmeta.t

    - xt/release/kwalitee.t

    - xt/release/meta-json.t

    - xt/release/minimum-version.t

    - xt/release/mojibake.t

    - xt/release/no-tabs.t

    - xt/release/pod-coverage.t

    - xt/release/pod-linkcheck.t

    - xt/release/pod-syntax.t

    - xt/release/portability.t

    - xt/release/synopsis.t

    - xt/release/test-version.t

    - xt/release/unused-vars.t
Avoid build on ms-windows and other fixes

Ticket: 97 (bfe4e01a-8c9a-40b5-bda4-3f1739637231)

  - Perl6::Slurp unmet dependency for 'no backslashes in markdown' test:
  "Can't locate Perl6/Slurp.pm in @INC"

    - Perl6::Slurp is no more required for
      'xt/author/10-mkdn-no-backslashes.t' test as it skips test if the
      module isn't found;

    - Removed dependency from:

      - Makefile.PL

      - Build.PL .

Ticket: 106 (d325fed4-72a7-4896-943c-6b99ef1f3bb8)

  - Mention running under tmux in the docs: "failed to connect to server:
    Connection refused" if tmux was not found

    - Description section was added with Tmux dependency.

    - Configuration and environment section was added that if use
      Debug::Fork::Tmux outside tmux then the command line parameters may
      point to the right tmux server and session.

Ticket: 109 (0604acf5-45ac-4912-9e0d-e641af1ba5ca)

  - Added tmux version requirement into Description of the POD: "tmux: unknown
    option -- F" for Tmux version < 1.6.

Ticket: 126 (a9ccd0f6-2fc1-4ef4-a98b-92702f90cf09)

  - Add perl-debugger links to POD

    - Added to the  'See Also' section of the POD:

      - nntp://nntp.perl.org/perl.debugger

      - http://debugger.perl.org/

Ticket: 134 (bb9900f5-8092-4101-8e13-0cf80f2e2955)

  - format diags

    - Formatted error messages in the Diagnostics section in the POD with
      C<>.

Ticket: 136 (c473ead6-7a08-4cb5-bc98-93cae79bc4e3)

  - ms-windows avoid build and install

    - mentioned ms-windows as a (restricted) dependency in the meta info so
      build for this platform shall be avoided.

    - Devel::AssertOS included itself into inc/