emacsPackagesNg: update various packages, add seq.el
emacsPackagesNg: update various packages, add seq.el

- circe, lcs, lui, shorten, tracking: 1.5 -> 2.1
- expand-region: 20141012 -> 20150902
- flycheck: 0.23 -> 0.25.1
- haskell-mode: 13.14 -> 13.16
- magit: 2.3.0 -> 2.3.1
- projectile: 0.12.0 -> 0.13.0
- seq: init at 1.11
- smartparens: 1.6.2 -> 20151025
- swiper: 0.6.0 -> 0.7.0

SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,triton/triton,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,NixOS/nixpkgs,triton/triton,triton/triton,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs