erlang-elixir layer, magit-gh-pulls, tweaks and fixes

• Fix #177: (error "Package elixir-mix-' is unavailable")` !
• New contribution layer for Erlang and Elixir languages. Those packages were originaly in spacemacs layer.
• Add package magit-gh-pulls into spacemacs layer. This magit extension is very handy to manage your PRs.
• company-mode layer has now support for Yasnippet! (thanks to trishume)
• company should be less annoying in some languages (see #174) (thanks to trishume)
• Improvement in .spacemacs template. Should more readable and straight-forward for new comers.
• Lower the guide-key delay to 0.4 by default. This variable has its own dotspacemacs variable for easy tweak: dotspacemacs-guide-key-delay
• Add support for system trash which should work on Windows, Linux distros and OS X. System trash is enabled by default in spacemacs. Documentation here.
• Inactive modeline (in unfocused windows) is now much simpler: flycheck, minor modes and battery info are now disabled.
• syl20bnr has been moved in usr category. o-blog submodule has been removed from this layer.

RESTclient, default theme support, fixes and tweaks

• New contrib layer restclient (thanks to CestDiego)
• Add support for custom theme with a new variable dotspacemacs-default-theme for .spacemacs, see documentation.
• helm-projectile-ag support (thanks to rphillips)
• new helm bindings <SPC> h r to resume the last helm buffer.
• Fix <SPC> p D binding for projectile-dired
• New key bindings for hl-anything and move .hl-save file to .cache directory.
• Fix directory structure for org-repo-todo layer (thanks to CestDiego)
• Smarter smartparens (thanks to trishume)
• Fix projectile-persp-bridge init of perspectives layer (thanks to CestDiego)

Up to date evil-org and fixes

• Fix #163. Now term faces should be correct when the spacemacs theme is changed to monokai or zenburn (and potentially other themes).
• Fix #165. Now use the MELPA version of evil-org and improve key bindings support.
• Better looking key sequences in documentation.

Paradox tweak

Add evil-search support to paradox packages list buffer.

Paradox packages list, tweaks and fixes

• New contrib layer paradox with hjkl navigation support in emacs state (like Magit) (thanks to CestDiego)
• New contrib layer org-repo-todo (thanks to CestDiego)
• Auto-highlight of TODOs in Python (thanks to danielwuz)
• <SPC> m d in Python is now for anaconda documentation lookup (pylookup is now on <SPC> m D) (thanks to valrus)
• perspectives layer is now lazy loaded.
• Disable fancy-narrow mode because it breaks a lot of other packages
• Remove undo-tree cache configuration ((setq undo-tree-auto-save-history t)) because it randomly prevents the user from undoing more than a few steps.

Perspectives, Prefix command names, helm-projectile

• perspectives contribution layer (prefix <SPC> P) (thanks to CestDiego)
• relative-linum on <SPC> t r (thanks to nadavspi)
• <SPC> t L to toggle visual lines (thanks to mooglinux)
• Prefix command names which make guide-key buffer much more readable.
• Fix void variable spacemacs-config-layer
• Reenable all helm-projectile commands (changes)
• Add documentation about private layers management
• Fix private directory readme (thanks to valrus)

fancy-battery integration, better projectile key-bindings, update toggles and buffer key bindings

• use <SPC> t m b to toggle battery info in mode-line. Or activate it on startup by putting (fancy-battery-mode) in your dotspacemacs/config
• projectile key bindings improvements: projectile-commander binding has been replaced by explicit key bindings. It better integrates within spacemacs (see changes).
• Various tweaks to buffers and toggles bindings (see buffer key bindings and toggles).
• Adds dummy core tests and a makefile to launch the tests outside of emacs.

Better readme, better configuration layer creation for new users.

Revamp of the README and improve configuration layer creation
Should be easier for new users to get the important information to get started.

• README.md has been split. It contains only an introduction and quick start kind of information. The huge old README content is now in DOCUMENTATION.md.
• Simplify the notion of configuration layers (see types of configuration layers)
• contribsys.el has been renamed to config-system.el
• new directory private ignored by Git. This is the recommended place to put private configuration layers.
• new functions:
  • dotspacemacs/install to install the dotfile
  • config-system/create-layer to easily create a new layer in the private directory.

Contribs

• new packages in trishume contrib: hungry-delete and aggresive-indent (thanks to trishume)
• better no indent for Python contrib, only : does not auto-indent (thanks to danielwuz)

Fixes

• Fix face update bug when loading a theme from ~/.spacemacs
• <SPC> s b put point on the last searched occurrence of auto-highlight-symbol, the micro-state is also enabled.

Hotfix for error 'evil-define-union-move is void' in evil-little-word

evil-plugins is excluded for now, waiting for the fix to be merged upstream.

Magit fix and tweaks

• Fixes <SPC> leader in Magit buffers
• hjkl navigation is now fully working in Magit buffers (before only jk was working). Corresponding Magit key bindings on hjkl have been set on HJKL.
• Remove nested use-packages in spacemacs/init-evil, now all evil packages have their own init-xxx function, so they can be excluded separately.
• init functions in spacemacs/packages.el have been sorted in alphabetical order.