diff --git a/.github/contributors/hertelm.md b/.github/contributors/hertelm.md
new file mode 100644
index 000000000..ba4250bfc
--- /dev/null
+++ b/.github/contributors/hertelm.md
@@ -0,0 +1,106 @@
+# spaCy contributor agreement
+
+This spaCy Contributor Agreement (**"SCA"**) is based on the
+[Oracle Contributor Agreement](http://www.oracle.com/technetwork/oca-405177.pdf).
+The SCA applies to any contribution that you make to any product or project
+managed by us (the **"project"**), and sets out the intellectual property rights
+you grant to us in the contributed materials. The term **"us"** shall mean
+[ExplosionAI GmbH](https://explosion.ai/legal). The term
+**"you"** shall mean the person or entity identified below.
+
+If you agree to be bound by these terms, fill in the information requested
+below and include the filled-in version with your first pull request, under the
+folder [`.github/contributors/`](/.github/contributors/). The name of the file
+should be your GitHub username, with the extension `.md`. For example, the user
+example_user would create the file `.github/contributors/example_user.md`.
+
+Read this agreement carefully before signing. These terms and conditions
+constitute a binding legal agreement.
+
+## Contributor Agreement
+
+1. The term "contribution" or "contributed materials" means any source code,
+object code, patch, tool, sample, graphic, specification, manual,
+documentation, or any other material posted or submitted by you to the project.
+
+2. With respect to any worldwide copyrights, or copyright applications and
+registrations, in your contribution:
+
+    * you hereby assign to us joint ownership, and to the extent that such
+    assignment is or becomes invalid, ineffective or unenforceable, you hereby
+    grant to us a perpetual, irrevocable, non-exclusive, worldwide, no-charge,
+    royalty-free, unrestricted license to exercise all rights under those
+    copyrights. This includes, at our option, the right to sublicense these same
+    rights to third parties through multiple levels of sublicensees or other
+    licensing arrangements;
+
+    * you agree that each of us can do all things in relation to your
+    contribution as if each of us were the sole owners, and if one of us makes
+    a derivative work of your contribution, the one who makes the derivative
+    work (or has it made will be the sole owner of that derivative work;
+
+    * you agree that you will not assert any moral rights in your contribution
+    against us, our licensees or transferees;
+
+    * you agree that we may register a copyright in your contribution and
+    exercise all ownership rights associated with it; and
+
+    * you agree that neither of us has any duty to consult with, obtain the
+    consent of, pay or render an accounting to the other for any use or
+    distribution of your contribution.
+
+3. With respect to any patents you own, or that you can license without payment
+to any third party, you hereby grant to us a perpetual, irrevocable,
+non-exclusive, worldwide, no-charge, royalty-free license to:
+
+    * make, have made, use, sell, offer to sell, import, and otherwise transfer
+    your contribution in whole or in part, alone or in combination with or
+    included in any product, work or materials arising out of the project to
+    which your contribution was submitted, and
+
+    * at our option, to sublicense these same rights to third parties through
+    multiple levels of sublicensees or other licensing arrangements.
+
+4. Except as set out above, you keep all right, title, and interest in your
+contribution. The rights that you grant to us under these terms are effective
+on the date you first submitted a contribution to us, even if your submission
+took place before the date you sign these terms.
+
+5. You covenant, represent, warrant and agree that:
+
+    * Each contribution that you submit is and shall be an original work of
+    authorship and you can legally grant the rights set out in this SCA;
+
+    * to the best of your knowledge, each contribution will not violate any
+    third party's copyrights, trademarks, patents, or other intellectual
+    property rights; and
+
+    * each contribution shall be in compliance with U.S. export control laws and
+    other applicable export and import laws. You agree to notify us if you
+    become aware of any circumstance which would make any of the foregoing
+    representations inaccurate in any respect. We may publicly disclose your
+    participation in the project, including the fact that you have signed the SCA.
+
+6. This SCA is governed by the laws of the State of California and applicable
+U.S. Federal law. Any choice of law rules will not apply.
+
+7. Please place an “x” on one of the applicable statement below. Please do NOT
+mark both statements:
+
+    * [x] I am signing on behalf of myself as an individual and no other person
+    or entity, including my employer, has or will have rights with respect to my
+    contributions.
+
+    * [ ] I am signing on behalf of my employer or a legal entity and I have the
+    actual authority to contractually bind that entity.
+
+## Contributor Details
+
+| Field                          | Entry                |
+|------------------------------- | -------------------- |
+| Name                           | Matthias Hertel      |
+| Company name (if applicable)   |                      |
+| Title or role (if applicable)  |                      |
+| Date                           | June 29, 2020        |
+| GitHub username                | hertelm              |
+| Website (optional)             |                      |
diff --git a/.gitignore b/.gitignore
index edcbba4d5..eb6be73dd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -70,6 +70,7 @@ Pipfile.lock
 *.egg
 .eggs
 MANIFEST
+spacy/git_info.py
 
 # Temporary files
 *.~*
diff --git a/MANIFEST.in b/MANIFEST.in
index 1947b9140..9819c7b70 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -6,3 +6,4 @@ include bin/spacy
 include pyproject.toml
 recursive-exclude spacy/lang *.json
 recursive-include spacy/lang *.json.gz
+recursive-include licenses *
diff --git a/examples/training/rehearsal.py b/examples/training/rehearsal.py
index 24b1cea00..1cdac02aa 100644
--- a/examples/training/rehearsal.py
+++ b/examples/training/rehearsal.py
@@ -67,7 +67,7 @@ def main(model_name, unlabelled_loc):
     pipe_exceptions = ["ner", "trf_wordpiecer", "trf_tok2vec"]
     other_pipes = [pipe for pipe in nlp.pipe_names if pipe not in pipe_exceptions]
     sizes = compounding(1.0, 4.0, 1.001)
-    with nlp.disable_pipes(*other_pipes) and warnings.catch_warnings():
+    with nlp.disable_pipes(*other_pipes), warnings.catch_warnings():
         # show warnings for misaligned entity spans once
         warnings.filterwarnings("once", category=UserWarning, module='spacy')
 
diff --git a/examples/training/train_entity_linker.py b/examples/training/train_entity_linker.py
index 3a8deb7a0..a68007504 100644
--- a/examples/training/train_entity_linker.py
+++ b/examples/training/train_entity_linker.py
@@ -60,12 +60,12 @@ TRAIN_DATA = sample_train_data()
     output_dir=("Optional output directory", "option", "o", Path),
     n_iter=("Number of training iterations", "option", "n", int),
 )
-def main(kb_path, vocab_path=None, output_dir=None, n_iter=50):
+def main(kb_path, vocab_path, output_dir=None, n_iter=50):
     """Create a blank model with the specified vocab, set up the pipeline and train the entity linker.
     The `vocab` should be the one used during creation of the KB."""
-    vocab = Vocab().from_disk(vocab_path)
     # create blank English model with correct vocab
-    nlp = spacy.blank("en", vocab=vocab)
+    nlp = spacy.blank("en")
+    nlp.vocab.from_disk(vocab_path)
     nlp.vocab.vectors.name = "spacy_pretrained_vectors"
     print("Created blank 'en' model with vocab from '%s'" % vocab_path)
 
diff --git a/examples/training/train_ner.py b/examples/training/train_ner.py
index ff6029567..f64ba801a 100644
--- a/examples/training/train_ner.py
+++ b/examples/training/train_ner.py
@@ -59,7 +59,7 @@ def main(model=None, output_dir=None, n_iter=100):
     pipe_exceptions = ["ner", "trf_wordpiecer", "trf_tok2vec"]
     other_pipes = [pipe for pipe in nlp.pipe_names if pipe not in pipe_exceptions]
     # only train NER
-    with nlp.disable_pipes(*other_pipes) and warnings.catch_warnings():
+    with nlp.disable_pipes(*other_pipes), warnings.catch_warnings():
         # show warnings for misaligned entity spans once
         warnings.filterwarnings("once", category=UserWarning, module='spacy')
 
diff --git a/examples/training/train_new_entity_type.py b/examples/training/train_new_entity_type.py
index e8ff6802a..a14688012 100644
--- a/examples/training/train_new_entity_type.py
+++ b/examples/training/train_new_entity_type.py
@@ -99,7 +99,7 @@ def main(model=None, new_model_name="animal", output_dir=None, n_iter=30):
     pipe_exceptions = ["ner", "trf_wordpiecer", "trf_tok2vec"]
     other_pipes = [pipe for pipe in nlp.pipe_names if pipe not in pipe_exceptions]
     # only train NER
-    with nlp.disable_pipes(*other_pipes) and warnings.catch_warnings():
+    with nlp.disable_pipes(*other_pipes), warnings.catch_warnings():
         # show warnings for misaligned entity spans once
         warnings.filterwarnings("once", category=UserWarning, module='spacy')
 
diff --git a/netlify.toml b/netlify.toml
index be809f1d4..9cb11ae81 100644
--- a/netlify.toml
+++ b/netlify.toml
@@ -1,6 +1,8 @@
 redirects = [
     # Netlify
     {from = "https://spacy.netlify.com/*", to="https://spacy.io/:splat", force = true },
+    # Subdomain for branches
+    {from = "https://nightly.spacy.io/*", to="https://nightly-spacy-io.spacy.io/:splat", force = true, status = 200},
     # Old subdomains
     {from = "https://survey.spacy.io/*", to = "https://spacy.io", force = true},
     {from = "http://survey.spacy.io/*", to = "https://spacy.io", force = true},
diff --git a/setup.py b/setup.py
index 62a09aa73..01e372e91 100755
--- a/setup.py
+++ b/setup.py
@@ -118,6 +118,55 @@ def is_source_release(path):
     return os.path.exists(os.path.join(path, "PKG-INFO"))
 
 
+# Include the git version in the build (adapted from NumPy)
+# Copyright (c) 2005-2020, NumPy Developers.
+# BSD 3-Clause license, see licenses/3rd_party_licenses.txt
+def write_git_info_py(filename="spacy/git_info.py"):
+    def _minimal_ext_cmd(cmd):
+        # construct minimal environment
+        env = {}
+        for k in ["SYSTEMROOT", "PATH", "HOME"]:
+            v = os.environ.get(k)
+            if v is not None:
+                env[k] = v
+        # LANGUAGE is used on win32
+        env["LANGUAGE"] = "C"
+        env["LANG"] = "C"
+        env["LC_ALL"] = "C"
+        out = subprocess.check_output(cmd, stderr=subprocess.STDOUT, env=env)
+        return out
+
+    git_version = "Unknown"
+    if os.path.exists(".git"):
+        try:
+            out = _minimal_ext_cmd(["git", "rev-parse", "--short", "HEAD"])
+            git_version = out.strip().decode("ascii")
+        except:
+            pass
+    elif os.path.exists(filename):
+        # must be a source distribution, use existing version file
+        try:
+            a = open(filename, "r")
+            lines = a.readlines()
+            git_version = lines[-1].split('"')[1]
+        except:
+            pass
+        finally:
+            a.close()
+
+    text = """# THIS FILE IS GENERATED FROM SPACY SETUP.PY
+#
+GIT_VERSION = "%(git_version)s"
+"""
+    a = open(filename, "w")
+    try:
+        a.write(
+            text % {"git_version": git_version,}
+        )
+    finally:
+        a.close()
+
+
 def clean(path):
     for name in MOD_NAMES:
         name = name.replace(".", "/")
@@ -140,6 +189,8 @@ def chdir(new_dir):
 
 
 def setup_package():
+    write_git_info_py()
+
     root = os.path.abspath(os.path.dirname(__file__))
 
     if len(sys.argv) > 1 and sys.argv[1] == "clean":
diff --git a/spacy/language.py b/spacy/language.py
index faa0447a4..e9d195453 100644
--- a/spacy/language.py
+++ b/spacy/language.py
@@ -34,6 +34,7 @@ from .lang.tag_map import TAG_MAP
 from .tokens import Doc
 from .lang.lex_attrs import LEX_ATTRS, is_stop
 from .errors import Errors, Warnings
+from .git_info import GIT_VERSION
 from . import util
 from . import about
 
@@ -206,6 +207,7 @@ class Language(object):
         self._meta.setdefault("email", "")
         self._meta.setdefault("url", "")
         self._meta.setdefault("license", "")
+        self._meta.setdefault("spacy_git_version", GIT_VERSION)
         self._meta["vectors"] = {
             "width": self.vocab.vectors_length,
             "vectors": len(self.vocab.vectors),
diff --git a/spacy/tests/doc/test_doc_api.py b/spacy/tests/doc/test_doc_api.py
index 6801d7844..388cd78fe 100644
--- a/spacy/tests/doc/test_doc_api.py
+++ b/spacy/tests/doc/test_doc_api.py
@@ -106,10 +106,16 @@ def test_doc_api_getitem(en_tokenizer):
 )
 def test_doc_api_serialize(en_tokenizer, text):
     tokens = en_tokenizer(text)
+    tokens[0].lemma_ = "lemma"
+    tokens[0].norm_ = "norm"
+    tokens[0].ent_kb_id_ = "ent_kb_id"
     new_tokens = Doc(tokens.vocab).from_bytes(tokens.to_bytes())
     assert tokens.text == new_tokens.text
     assert [t.text for t in tokens] == [t.text for t in new_tokens]
     assert [t.orth for t in tokens] == [t.orth for t in new_tokens]
+    assert new_tokens[0].lemma_ == "lemma"
+    assert new_tokens[0].norm_ == "norm"
+    assert new_tokens[0].ent_kb_id_ == "ent_kb_id"
 
     new_tokens = Doc(tokens.vocab).from_bytes(
         tokens.to_bytes(exclude=["tensor"]), exclude=["tensor"]
diff --git a/spacy/tokens/doc.pyx b/spacy/tokens/doc.pyx
index 25a147208..5b03dc5d2 100644
--- a/spacy/tokens/doc.pyx
+++ b/spacy/tokens/doc.pyx
@@ -892,7 +892,7 @@ cdef class Doc:
 
         DOCS: https://spacy.io/api/doc#to_bytes
         """
-        array_head = [LENGTH, SPACY, LEMMA, ENT_IOB, ENT_TYPE, ENT_ID, NORM]  # TODO: ENT_KB_ID ?
+        array_head = [LENGTH, SPACY, LEMMA, ENT_IOB, ENT_TYPE, ENT_ID, NORM, ENT_KB_ID]
         if self.is_tagged:
             array_head.extend([TAG, POS])
         # If doc parsed add head and dep attribute
@@ -901,6 +901,14 @@ cdef class Doc:
         # Otherwise add sent_start
         else:
             array_head.append(SENT_START)
+        strings = set()
+        for token in self:
+            strings.add(token.tag_)
+            strings.add(token.lemma_)
+            strings.add(token.dep_)
+            strings.add(token.ent_type_)
+            strings.add(token.ent_kb_id_)
+            strings.add(token.norm_)
         # Msgpack doesn't distinguish between lists and tuples, which is
         # vexing for user data. As a best guess, we *know* that within
         # keys, we must have tuples. In values we just have to hope
@@ -912,6 +920,7 @@ cdef class Doc:
             "sentiment": lambda: self.sentiment,
             "tensor": lambda: self.tensor,
             "cats": lambda: self.cats,
+            "strings": lambda: list(strings),
         }
         for key in kwargs:
             if key in serializers or key in ("user_data", "user_data_keys", "user_data_values"):
@@ -942,6 +951,7 @@ cdef class Doc:
             "sentiment": lambda b: None,
             "tensor": lambda b: None,
             "cats": lambda b: None,
+            "strings": lambda b: None,
             "user_data_keys": lambda b: None,
             "user_data_values": lambda b: None,
         }
@@ -965,6 +975,9 @@ cdef class Doc:
             self.tensor = msg["tensor"]
         if "cats" not in exclude and "cats" in msg:
             self.cats = msg["cats"]
+        if "strings" not in exclude and "strings" in msg:
+            for s in msg["strings"]:
+                self.vocab.strings.add(s)
         start = 0
         cdef const LexemeC* lex
         cdef unicode orth_
diff --git a/website/docs/api/phrasematcher.md b/website/docs/api/phrasematcher.md
index a72277420..49211174c 100644
--- a/website/docs/api/phrasematcher.md
+++ b/website/docs/api/phrasematcher.md
@@ -91,7 +91,7 @@ Match a stream of documents, yielding them in turn.
 > ```python
 >   from spacy.matcher import PhraseMatcher
 >   matcher = PhraseMatcher(nlp.vocab)
->   for doc in matcher.pipe(texts, batch_size=50):
+>   for doc in matcher.pipe(docs, batch_size=50):
 >       pass
 > ```
 
diff --git a/website/docs/usage/rule-based-matching.md b/website/docs/usage/rule-based-matching.md
index f7866fe31..252aa8c77 100644
--- a/website/docs/usage/rule-based-matching.md
+++ b/website/docs/usage/rule-based-matching.md
@@ -122,7 +122,7 @@ for match_id, start, end in matches:
 ```
 
 The matcher returns a list of `(match_id, start, end)` tuples – in this case,
-`[('15578876784678163569', 0, 2)]`, which maps to the span `doc[0:2]` of our
+`[('15578876784678163569', 0, 3)]`, which maps to the span `doc[0:3]` of our
 original document. The `match_id` is the [hash value](/usage/spacy-101#vocab) of
 the string ID "HelloWorld". To get the string value, you can look up the ID in
 the [`StringStore`](/api/stringstore).