diff --git a/bower.json b/bower.json
index c4f36f6c16..41962a40d4 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "polymer",
-  "version": "1.8.0",
+  "version": "1.8.1",
   "main": [
     "polymer.html",
     "polymer-mini.html",
diff --git a/build.log b/build.log
index 5fd6529f69..b19c827bff 100644
--- a/build.log
+++ b/build.log
@@ -1,33 +1,33 @@
 BUILD LOG
 ---------
-Build Time: 2017-02-06T16:13:42-0800
+Build Time: 2017-02-27T14:14:04-0800
 
 NODEJS INFORMATION
 ==================
-nodejs: v6.9.3
+nodejs: v7.6.0
 abbrev: 1.0.9
+accepts: 1.3.3
 accessibility-developer-tools: 2.11.0
 acorn: 4.0.3
 acorn-jsx: 3.0.1
 adm-zip: 0.4.7
-accepts: 1.3.3
 after: 0.8.2
+agent-base: 2.0.1
 ajv: 4.10.0
 ajv-keywords: 1.2.0
-agent-base: 2.0.1
+align-text: 0.1.4
 amdefine: 1.0.1
 ansi-cyan: 0.1.1
 ansi-escapes: 1.4.0
 ansi-red: 0.1.1
 ansi-regex: 2.0.0
 ansi-styles: 2.2.1
-align-text: 0.1.4
-ansi-wrap: 0.1.0
 append-field: 0.1.0
-archy: 1.0.0
 archiver: 0.14.4
-arr-diff: 2.0.0
+ansi-wrap: 0.1.0
+archy: 1.0.0
 argparse: 1.0.9
+arr-diff: 2.0.0
 arr-flatten: 1.0.1
 arr-union: 2.1.0
 array-differ: 1.0.0
@@ -37,21 +37,21 @@ array-slice: 0.2.3
 array-union: 1.0.2
 array-uniq: 1.0.3
 array-unique: 0.2.1
-arraybuffer.slice: 0.0.6
 arrify: 1.0.1
+arraybuffer.slice: 0.0.6
 asap: 2.0.5
 asn1: 0.1.11
 assert-plus: 0.1.5
 assertion-error: 1.0.2
 async: 0.9.2
-aws-sign2: 0.5.0
 asynckit: 0.4.0
+aws-sign2: 0.5.0
 aws4: 1.5.0
+babel-code-frame: 6.20.0
 babel-polyfill: 6.20.0
 babel-runtime: 6.20.0
 backo2: 1.0.2
 backoff: 2.5.0
-babel-code-frame: 6.20.0
 balanced-match: 0.4.2
 base64-arraybuffer: 0.1.5
 base64id: 1.0.0
@@ -60,49 +60,49 @@ bcrypt-pbkdf: 1.0.0
 beeper: 1.1.1
 better-assert: 1.0.2
 binaryextensions: 1.0.1
-bluebird: 2.11.0
 blob: 0.0.4
-body-parser: 1.15.2
 bl: 0.9.5
+bluebird: 2.11.0
+body-parser: 1.15.2
 boom: 0.4.2
-brace-expansion: 1.1.6
 boxen: 0.3.1
+brace-expansion: 1.1.6
 braces: 1.8.5
-buffer-crc32: 0.2.13
 browserstack: 1.5.0
-bufferstreams: 1.1.1
+buffer-crc32: 0.2.13
 buffer-shims: 1.0.0
-bunyan: 1.8.5
+bufferstreams: 1.1.1
 builtin-modules: 1.1.1
+bunyan: 1.8.5
 busboy: 0.2.13
 bytes: 2.4.0
-callsite: 1.0.0
 caller-path: 0.1.0
+callsite: 1.0.0
 callsites: 0.2.0
-camelcase: 2.1.1
 camelcase-keys: 2.1.0
+camelcase: 2.1.1
 capture-stack-trace: 1.0.0
+caseless: 0.8.0
 center-align: 0.1.3
 chai: 3.5.0
 chalk: 1.1.3
-caseless: 0.8.0
 circular-json: 0.3.1
 cleankill: 1.0.3
 cli-cursor: 1.0.2
+cli-width: 2.1.0
+cliui: 2.1.0
 clone: 1.0.2
 clone-stats: 0.0.1
 co: 4.6.0
 code-point-at: 1.1.0
-cliui: 2.1.0
-cli-width: 2.1.0
 combined-stream: 0.0.7
 commander: 2.3.0
+component-bind: 1.0.0
 component-emitter: 1.1.2
 component-inherit: 0.0.3
-component-bind: 1.0.0
+compress-commons: 0.2.9
 concat-map: 0.0.1
 concat-stream: 1.5.2
-compress-commons: 0.2.9
 configstore: 2.1.0
 content-disposition: 0.5.1
 content-type: 1.0.2
@@ -116,6 +116,7 @@ create-error-class: 3.0.2
 cryptiles: 0.2.2
 csv: 0.4.6
 csv-generate: 0.0.6
+csv-parse: 1.1.7
 csv-stringify: 0.0.8
 ctype: 0.5.3
 currently-unhandled: 0.4.1
@@ -124,10 +125,10 @@ dashdash: 1.14.1
 dateformat: 1.0.12
 debug: 2.4.1
 debuglog: 1.0.1
-csv-parse: 1.1.7
+decamelize: 1.2.0
 deep-eql: 0.1.3
 deep-extend: 0.4.1
-decamelize: 1.2.0
+deep-is: 0.1.3
 defaults: 1.0.3
 del: 2.2.2
 delayed-stream: 0.0.5
@@ -138,102 +139,101 @@ detect-file: 0.1.0
 dezalgo: 1.0.3
 dicer: 0.2.5
 diff: 1.4.0
-deep-is: 0.1.3
 doctrine: 1.5.0
+dom-serializer: 0.1.0
 dom5: 1.3.6
 domelementtype: 1.3.0
 domhandler: 2.3.0
-dom-serializer: 0.1.0
 domutils: 1.5.1
-dtrace-provider: 0.6.0
+dot-prop: 3.0.0
 duplexer: 0.1.1
+dtrace-provider: 0.6.0
 duplexer2: 0.0.2
-dot-prop: 3.0.0
-ee-first: 1.1.1
 ecc-jsbn: 0.1.1
 encodeurl: 1.0.1
+ee-first: 1.1.1
 end-of-stream: 0.1.5
 engine.io: 1.8.2
 engine.io-parser: 1.3.2
-entities: 1.1.1
 engine.io-client: 1.8.2
-es5-ext: 0.10.12
+entities: 1.1.1
 error-ex: 1.3.0
+es5-ext: 0.10.12
+es6-iterator: 2.0.0
 es6-map: 0.1.4
 es6-promise: 2.3.0
-es6-iterator: 2.0.0
+es6-set: 0.1.4
 es6-symbol: 3.1.0
 es6-weak-map: 2.0.1
-escape-html: 1.0.3
 escape-regexp-component: 1.0.2
+escape-html: 1.0.3
 escape-string-regexp: 1.0.5
-escodegen: 1.8.1
-es6-set: 0.1.4
 escope: 3.6.0
-eslint: 3.12.1
+escodegen: 1.8.1
 eslint-plugin-html: 1.7.0
+eslint: 3.12.1
 espree: 3.3.2
-estraverse: 4.2.0
+esprima: 2.7.3
 esrecurse: 4.1.0
+estraverse: 4.2.0
 esutils: 2.0.2
 etag: 1.7.0
 event-emitter: 0.3.4
 exit-hook: 1.1.1
-esprima: 2.7.3
 expand-brackets: 0.1.5
 expand-range: 1.8.2
 expand-tilde: 1.2.2
+express: 4.14.0
 extend: 3.0.0
 extend-shallow: 1.1.4
 extglob: 0.3.2
 extsprintf: 1.2.0
-express: 4.14.0
 fancy-log: 1.2.0
-fd-slicer: 1.0.1
 fast-levenshtein: 2.0.5
+fd-slicer: 1.0.1
 figures: 1.7.0
 file-entry-cache: 2.0.0
 filename-regex: 2.0.0
 fill-range: 2.2.3
 filled-array: 1.1.0
 finalhandler: 0.5.0
-find-up: 1.1.2
 find-index: 0.1.1
+find-up: 1.1.2
 findup-sync: 0.4.3
-first-chunk-stream: 1.0.0
 fined: 1.0.2
-for-in: 0.1.6
-flat-cache: 1.2.1
+first-chunk-stream: 1.0.0
 flagged-respawn: 0.3.2
-for-own: 0.1.4
+flat-cache: 1.2.1
 forever-agent: 0.5.2
+for-in: 0.1.6
+for-own: 0.1.4
+form-data: 0.2.0
 formatio: 1.1.1
 formidable: 1.0.17
-forwarded: 0.1.0
 freeport: 1.0.5
 fresh: 0.3.0
-fs-exists-sync: 0.1.0
 fs.realpath: 1.0.0
+forwarded: 0.1.0
 gaze: 0.5.2
 generate-function: 2.0.0
 generate-object-property: 1.2.0
+fs-exists-sync: 0.1.0
 get-stdin: 4.0.1
 getpass: 0.1.6
 github-url-from-git: 1.5.0
 github-url-from-username-repo: 1.0.2
-glob-base: 0.3.0
 glob: 7.1.1
-glob-parent: 2.0.0
-form-data: 0.2.0
+glob-base: 0.3.0
 glob-stream: 3.1.18
+glob-parent: 2.0.0
 glob2base: 0.0.12
 glob-watcher: 0.0.6
 global-modules: 0.2.3
-globals: 9.14.0
 global-prefix: 0.1.5
+globals: 9.14.0
 globby: 5.0.0
-glogg: 1.0.0
 globule: 0.1.0
+glogg: 1.0.0
 got: 5.7.1
 graceful-fs: 4.1.11
 graceful-readlink: 1.0.1
@@ -242,13 +242,13 @@ gulp: 3.9.1
 gulp-audit: 1.0.0
 gulp-eslint: 3.0.1
 gulp-rename: 1.2.2
-gulp-replace: 0.5.4
 gulp-util: 3.0.7
+gulp-replace: 0.5.4
 gulp-vulcanize: 6.1.0
 gulplog: 1.0.0
 handle-thing: 1.2.5
-har-validator: 2.0.6
 has-ansi: 2.0.0
+har-validator: 2.0.6
 has-binary: 0.1.7
 has-color: 0.1.7
 has-cors: 1.1.0
@@ -260,6 +260,7 @@ hosted-git-info: 2.1.5
 hpack.js: 2.1.6
 htmlparser2: 3.9.2
 http-deceiver: 1.2.7
+http-errors: 1.5.1
 http-signature: 0.11.0
 https-proxy-agent: 1.0.0
 hydrolysis: 1.24.1
@@ -272,48 +273,47 @@ inflight: 1.0.6
 inherits: 2.0.3
 ini: 1.3.4
 inquirer: 0.12.0
-http-errors: 1.5.1
 interpret: 1.0.1
 ipaddr.js: 1.1.1
+is-absolute: 0.2.6
 is-arrayish: 0.2.1
 is-buffer: 1.1.4
+is-dotfile: 1.0.2
 is-builtin-module: 1.0.0
-is-absolute: 0.2.6
 is-equal-shallow: 0.1.3
 is-extendable: 0.1.1
-is-dotfile: 1.0.2
 is-extglob: 1.0.0
-is-fullwidth-code-point: 1.0.0
 is-finite: 1.0.2
+is-fullwidth-code-point: 1.0.0
 is-glob: 2.0.1
 is-my-json-valid: 2.15.0
 is-npm: 1.0.0
+is-number: 2.1.0
 is-obj: 1.0.1
 is-path-cwd: 1.0.0
-is-path-in-cwd: 1.0.0
 is-path-inside: 1.0.0
+is-path-in-cwd: 1.0.0
 is-posix-bracket: 0.1.1
 is-primitive: 2.0.0
 is-property: 1.0.2
-is-number: 2.1.0
 is-redirect: 1.0.0
 is-relative: 0.2.1
 is-resolvable: 1.0.0
+is-retry-allowed: 1.1.0
 is-stream: 1.1.0
 is-typedarray: 1.0.0
 is-unc-path: 0.1.2
 is-utf8: 0.2.1
-is-retry-allowed: 1.1.0
 is-windows: 0.2.0
 isarray: 1.0.0
 isexe: 1.1.2
-isobject: 2.1.0
 isstream: 0.1.2
+isobject: 2.1.0
 istextorbinary: 1.0.2
 jade: 0.26.3
 jju: 1.3.0
-js-tokens: 2.0.0
 jodid25519: 1.0.2
+js-tokens: 2.0.0
 js-yaml: 3.7.0
 jsbn: 0.1.0
 json-parse-helpfulerror: 1.0.3
@@ -322,36 +322,36 @@ json-stable-stringify: 1.0.1
 json-stringify-safe: 5.0.1
 json3: 3.3.2
 jsonify: 0.0.0
-jsprim: 1.3.1
 jsonpointer: 4.0.0
+jsprim: 1.3.1
 keep-alive-agent: 0.0.1
 kind-of: 3.1.0
 latest-version: 2.0.0
+launchpad: 0.5.4
 lazy-cache: 1.0.4
 lazypipe: 1.0.1
 levn: 0.3.0
+lazystream: 0.1.0
 liftoff: 2.3.0
 load-json-file: 1.1.0
-lazystream: 0.1.0
 lodash: 1.0.2
 lodash._basecopy: 3.0.1
 lodash._basetostring: 3.0.1
 lodash._basevalues: 3.0.0
 lodash._getnative: 3.9.1
-launchpad: 0.5.4
 lodash._isiterateecall: 3.0.9
 lodash._reescape: 3.0.0
 lodash._reevaluate: 3.0.0
-lodash.assignwith: 4.2.0
+lodash._reinterpolate: 3.0.0
 lodash._root: 3.0.1
+lodash.assignwith: 4.2.0
 lodash.escape: 3.2.0
 lodash.isarguments: 3.1.0
 lodash.isarray: 3.0.4
 lodash.isempty: 4.4.0
 lodash.isplainobject: 4.0.6
-lodash._reinterpolate: 3.0.0
-lodash.isstring: 4.0.1
 lodash.keys: 3.1.2
+lodash.isstring: 4.0.1
 lodash.mapvalues: 4.6.0
 lodash.pick: 4.4.0
 lodash.restparam: 3.6.1
@@ -359,114 +359,114 @@ lodash.template: 3.6.2
 lodash.templatesettings: 3.1.1
 lolex: 1.3.2
 longest: 1.0.1
+loud-rejection: 1.6.0
 lowercase-keys: 1.0.0
 lru-cache: 2.7.3
 map-cache: 0.2.2
 map-obj: 1.0.1
-loud-rejection: 1.6.0
+media-typer: 0.3.0
 meow: 3.7.0
 merge-descriptors: 1.0.1
-media-typer: 0.3.0
 methods: 1.1.2
-micromatch: 2.3.11
 mime: 1.3.4
+micromatch: 2.3.11
 mime-db: 1.25.0
 mime-types: 2.1.13
 minimalistic-assert: 1.0.0
 minimatch: 3.0.3
 minimist: 1.2.0
 mkdirp: 0.5.1
+mocha: 2.5.3
 moment: 2.17.1
 ms: 0.7.2
-mocha: 2.5.3
-multipipe: 0.1.2
 multer: 1.2.1
-mv: 2.1.1
+multipipe: 0.1.2
 mute-stream: 0.0.5
+mv: 2.1.1
+nan: 2.4.0
 natives: 1.1.0
 natural-compare: 1.4.0
-nan: 2.4.0
-negotiator: 0.6.1
 ncp: 2.0.0
-node-uuid: 1.4.7
-node-status-codes: 1.0.0
+negotiator: 0.6.1
 node-int64: 0.3.3
+node-status-codes: 1.0.0
+node-uuid: 1.4.7
 nodegit-promise: 4.0.0
 nomnom: 1.8.1
 nopt: 3.0.6
+normalize-package-data: 2.3.5
 normalize-path: 2.0.1
 number-is-nan: 1.0.1
 oauth-sign: 0.5.0
-normalize-package-data: 2.3.5
 object-assign: 4.1.0
 object-component: 0.0.3
 object.omit: 2.0.1
 obuf: 1.1.1
+on-finished: 2.3.0
 once: 1.4.0
 onetime: 1.1.0
-on-finished: 2.3.0
-options: 0.0.6
 optionator: 0.8.2
-ordered-read-streams: 0.1.0
+options: 0.0.6
 orchestrator: 0.3.8
+ordered-read-streams: 0.1.0
 os-homedir: 1.0.2
-package-json: 2.4.0
+os-tmpdir: 1.0.2
 osenv: 0.1.4
+package-json: 2.4.0
 parse-filepath: 1.0.1
 parse-glob: 3.0.4
 parse-json: 2.2.0
-parse5: 1.5.1
 parse-passwd: 1.0.0
-os-tmpdir: 1.0.2
+parse5: 1.5.1
 parsejson: 0.0.3
 parseqs: 0.0.5
-parseurl: 1.3.1
 parseuri: 0.0.5
+parseurl: 1.3.1
 path-exists: 2.1.0
 path-is-absolute: 1.0.1
 path-is-inside: 1.0.2
-path-root: 0.1.1
 path-posix: 1.0.0
+path-root: 0.1.1
 path-root-regex: 0.1.2
 path-to-regexp: 0.1.7
 path-type: 1.1.0
-pify: 2.3.0
 pend: 1.2.0
+pify: 2.3.0
 pinkie: 2.0.4
 pinkie-promise: 2.0.1
 plist: 2.0.1
-pluralize: 1.2.1
 plugin-error: 0.1.2
+pluralize: 1.2.1
 polyclean: 1.3.1
 precond: 0.2.3
 prelude-ls: 1.1.2
-pretty-hrtime: 1.0.3
 prepend-http: 1.0.4
-process-nextick-args: 1.0.7
 preserve: 0.2.0
+pretty-hrtime: 1.0.3
+process-nextick-args: 1.0.7
 progress: 1.1.8
-proxy-addr: 1.1.2
 promisify-node: 0.4.0
+proxy-addr: 1.1.2
 pseudomap: 1.0.2
 punycode: 1.4.1
 q: 1.4.1
-randomatic: 1.1.6
 qs: 6.2.0
+randomatic: 1.1.6
 range-parser: 1.2.0
 raw-body: 2.1.7
 rc: 1.1.6
 read-all-stream: 3.1.0
 read-installed: 3.1.5
 read-package-json: 1.3.3
+readable-stream: 2.2.2
 read-pkg: 1.1.0
-read-pkg-up: 1.0.1
 readdir-scoped-modules: 1.0.2
-readable-stream: 2.2.2
+rechoir: 0.6.2
 readline2: 1.0.1
+read-pkg-up: 1.0.1
 redent: 1.0.0
-rechoir: 0.6.2
-regenerator-runtime: 0.10.1
 regex-cache: 0.4.3
+regenerator-runtime: 0.10.1
 registry-auth-token: 3.1.0
 registry-url: 3.1.0
 repeat-element: 1.1.2
@@ -474,48 +474,49 @@ repeat-string: 1.6.1
 repeating: 2.0.1
 replace-ext: 0.0.1
 replacestream: 4.0.2
+request: 2.51.0
 require-uncached: 1.0.3
 resolve: 1.2.0
 resolve-dir: 0.1.1
 resolve-from: 1.0.1
-restore-cursor: 1.0.1
 restify: 4.3.0
+restore-cursor: 1.0.1
 right-align: 0.1.3
 rimraf: 2.5.4
-run-sequence: 1.2.2
 run-async: 0.1.0
-request: 2.51.0
+run-sequence: 1.2.2
 rx-lite: 3.1.2
 safe-json-stringify: 1.0.3
 samsam: 1.1.2
 sauce-connect-launcher: 1.1.1
-selenium-standalone: 5.9.0
 select-hose: 2.0.0
+selenium-standalone: 5.9.0
 semver: 4.3.6
+semver-diff: 2.1.0
 send: 0.11.1
 sequencify: 0.0.7
-semver-diff: 2.1.0
 serve-static: 1.11.1
 serve-waterfall: 1.1.1
+server-destroy: 1.0.1
 setprototypeof: 1.0.2
 shelljs: 0.7.5
 sigmund: 1.0.1
-server-destroy: 1.0.1
 signal-exit: 3.0.2
+sinon: 1.17.6
 sinon-chai: 2.8.0
 slice-ansi: 0.0.4
 slide: 1.1.6
-sinon: 1.17.6
 sntp: 0.2.4
-socket.io-adapter: 0.5.0
 socket.io: 1.7.2
+socket.io-adapter: 0.5.0
 socket.io-client: 1.7.2
 socket.io-parser: 2.3.1
 source-map: 0.2.0
 sparkles: 1.0.0
 spdx-correct: 1.0.2
-spdx-license-ids: 1.2.2
 spdx-expression-parse: 1.0.4
+spdx-license-ids: 1.2.2
+spdy: 3.4.4
 spdy-transport: 2.0.18
 sprintf-js: 1.0.3
 sshpk: 1.10.1
@@ -523,34 +524,33 @@ stacky: 1.3.1
 statuses: 1.3.1
 stream-combiner: 0.2.2
 stream-consume: 0.1.0
-spdy: 3.4.4
-streamsearch: 0.1.2
 stream-transform: 0.1.1
+streamsearch: 0.1.2
 string-width: 1.0.2
 string_decoder: 0.10.31
 stringstream: 0.0.5
 strip-ansi: 3.0.1
 strip-bom: 2.0.0
-strip-indent: 1.0.1
 strip-json-comments: 1.0.4
+strip-indent: 1.0.1
 supports-color: 2.0.0
 table: 3.8.3
 tar-stream: 1.5.2
 temp: 0.8.3
 test-fixture: 1.1.1
-text-table: 0.2.0
 textextensions: 1.0.2
+text-table: 0.2.0
 through: 2.3.8
-through2: 2.0.3
 tildify: 1.2.0
+through2: 2.0.3
 time-stamp: 1.0.1
 timed-out: 3.1.0
 to-array: 0.1.4
 to-iso-string: 0.0.2
 tough-cookie: 2.3.2
 trim-newlines: 1.0.0
-tryit: 1.0.3
 tunnel-agent: 0.4.3
+tryit: 1.0.3
 tweetnacl: 0.14.5
 type-check: 0.3.2
 type-detect: 1.0.0
@@ -561,29 +561,29 @@ uglify-to-browserify: 1.0.2
 ultron: 1.0.2
 unc-path-regex: 0.1.2
 underscore: 1.6.0
-unique-stream: 1.0.0
 underscore.string: 3.0.3
+unique-stream: 1.0.0
 unpipe: 1.0.0
 unzip-response: 1.0.2
+update-notifier: 0.6.3
 urijs: 1.16.1
 url-parse-lax: 1.0.0
 user-home: 1.1.1
 util: 0.10.3
 util-deprecate: 1.0.2
 util-extend: 1.0.3
+uuid: 2.0.3
 utils-merge: 1.0.0
-update-notifier: 0.6.3
 v8flags: 2.0.11
+validate-npm-package-license: 3.0.1
 vargs: 0.1.0
 vary: 1.1.0
 vasync: 1.6.3
-verror: 1.9.0
 vinyl: 0.5.3
-validate-npm-package-license: 3.0.1
+verror: 1.9.0
 vinyl-fs: 0.3.14
-vulcanize: 1.15.1
-uuid: 2.0.3
 wbuf: 1.7.2
+vulcanize: 1.15.1
 wct-local: 2.0.13
 wct-sauce: 1.8.6
 wd: 0.3.12
@@ -592,10 +592,10 @@ which: 1.2.12
 widest-line: 1.0.0
 window-size: 0.1.0
 wordwrap: 1.0.0
-wrappy: 1.0.2
 write: 0.2.1
-ws: 1.1.1
+wrappy: 1.0.2
 write-file-atomic: 1.2.0
+ws: 1.1.1
 wtf-8: 1.0.0
 xdg-basedir: 2.0.0
 xmlbuilder: 8.2.2
@@ -607,23 +607,23 @@ yargs: 3.10.0
 yauzl: 2.7.0
 yeast: 0.1.2
 zip-stream: 0.5.2
-@types/chalk: 0.4.31
 @types/clone: 0.1.30
 @types/express: 4.0.34
-@types/mime: 0.0.29
+@types/chalk: 0.4.31
 @types/express-serve-static-core: 4.0.39
 @types/freeport: 1.0.20
+@types/mime: 0.0.29
 @types/node: 4.0.30
 @types/parse5: 0.0.31
-@types/which: 1.0.28
 @types/serve-static: 1.7.31
+@types/which: 1.0.28
 
 REPO REVISIONS
 ==============
-polymer-1.x: ef0174703a1cf850ca4e6f205a8cec108687e85e
+polymer-1.x: 891ac04297e6f5c243f5797e927b4da7e80cf30b
 
 BUILD HASHES
 ============
 polymer-mini.html: 37df26412c1452ef3f58a0e4a8720eeab15fd4b2
-polymer-micro.html: 775957d2c4f66b26fe057854ef1d364897906dfc
-polymer.html: 4fd2941c2a1a94aa59325a88de5067c3600fd21d
\ No newline at end of file
+polymer-micro.html: a5cd83cb040eca7ced9755b9e5b748c8c42ab390
+polymer.html: d2d828dbfa381991f1f3d49f4ac4315c0c8328f6
\ No newline at end of file
diff --git a/polymer-micro.html b/polymer-micro.html
index 263b5aa654..ef46f81b38 100644
--- a/polymer-micro.html
+++ b/polymer-micro.html
@@ -207,6 +207,7 @@
 if (settings.disableUpgradeEnabled) {
 if (this.hasAttribute('disable-upgrade')) {
 this._propertySetter = disableUpgradePropertySetter;
+this._configValue = null;
 this.__data__ = {};
 return;
 } else {
@@ -386,6 +387,7 @@
 if (!this.__hasInitialized && name === 'disable-upgrade') {
 this.__hasInitialized = true;
 this._propertySetter = Polymer.Bind._modelApi._propertySetter;
+this._configValue = Polymer.Base._configValue;
 this.__initialize();
 }
 origAttributeChangedCallback.call(this, name, oldValue, newValue);
@@ -788,7 +790,7 @@
 return value != null ? value : undefined;
 }
 }
-});Polymer.version = "1.8.0";Polymer.Base._addFeature({
+});Polymer.version = "1.8.1";Polymer.Base._addFeature({
 _registerFeatures: function () {
 this._prepIs();
 this._prepBehaviors();
diff --git a/polymer.html b/polymer.html
index e8cfcc42ce..61f81beb84 100644
--- a/polymer.html
+++ b/polymer.html
@@ -2009,6 +2009,7 @@
 }
 });(function () {
 var usePolyfillProto = Polymer.Settings.usePolyfillProto;
+var avoidInstanceProperties = Boolean(Object.getOwnPropertyDescriptor(document.documentElement, 'properties'));
 Polymer.Base._addFeature({
 _setupConfigure: function (initialConfig) {
 this._config = {};
@@ -2046,7 +2047,7 @@
 for (var i = 0; i < this.behaviors.length; i++) {
 this._configureProperties(this.behaviors[i].properties, config);
 }
-this._configureProperties(this.properties, config);
+this._configureProperties(avoidInstanceProperties ? this.__proto__.properties : this.properties, config);
 this.mixin(config, this._aboveConfig);
 this._config = config;
 if (this._clients && this._clients.length) {
@@ -2743,6 +2744,37 @@
 }
 return cssText;
 },
+styleIncludesToTemplate: function (targetTemplate) {
+var styles = targetTemplate.content.querySelectorAll('style[include]');
+for (var i = 0, s; i < styles.length; i++) {
+s = styles[i];
+s.parentNode.insertBefore(this._includesToFragment(s.getAttribute('include')), s);
+}
+},
+_includesToFragment: function (styleIncludes) {
+var includeArray = styleIncludes.trim().split(' ');
+var frag = document.createDocumentFragment();
+for (var i = 0; i < includeArray.length; i++) {
+var t = Polymer.DomModule.import(includeArray[i], 'template');
+if (t) {
+this._addStylesToFragment(frag, t.content);
+}
+}
+return frag;
+},
+_addStylesToFragment: function (frag, source) {
+var s$ = source.querySelectorAll('style');
+for (var i = 0, s; i < s$.length; i++) {
+s = s$[i];
+var include = s.getAttribute('include');
+if (include) {
+frag.appendChild(this._includesToFragment(include));
+}
+if (s.textContent) {
+frag.appendChild(s.cloneNode(true));
+}
+}
+},
 isTargetedBuild: function (buildType) {
 return settings.useNativeShadow ? buildType === 'shadow' : buildType === 'shady';
 },
@@ -3327,6 +3359,9 @@
 if (this._template) {
 var hasTargetedCssBuild = styleUtil.isTargetedBuild(this.__cssBuild);
 if (settings.useNativeCSSProperties && this.__cssBuild === 'shadow' && hasTargetedCssBuild) {
+if (settings.preserveStyleIncludes) {
+styleUtil.styleIncludesToTemplate(this._template);
+}
 return;
 }
 this._styles = this._styles || this._collectStyles();