Drop node v0.12 support, upgrade nan to latest

.travis.yml

@@ -53,13 +53,6 @@ matrix:
             packages: [ 'clang-3.5']
      - os: linux
        compiler: clang
-       env: NODE_VERSION="0.12"
-       addons:
-         apt:
-            sources: [ 'ubuntu-toolchain-r-test','llvm-toolchain-precise-3.5', 'gcc-multilib', 'g++-multilib', 'libsqlite3-dev:i386' ]
-            packages: [ 'clang-3.5']
-     - os: linux
-       compiler: clang
        env: NODE_VERSION="0.10"
        addons:
          apt:
@@ -94,9 +87,6 @@ matrix:
        env: NODE_VERSION="4" # node abi 46
      - os: osx
        compiler: clang
-       env: NODE_VERSION="0.12" # node abi 14
-     - os: osx
-       compiler: clang
        env: NODE_VERSION="0.10" # node abi 11
 
 env:

package.json

@@ -37,7 +37,7 @@
     "url": "git://github.com/mapbox/node-sqlite3.git"
   },
   "dependencies": {
-    "nan": "~2.6.2",
+    "nan": "~2.7.0",
     "node-pre-gyp": "~0.6.37"
   },
   "bundledDependencies": [