diff --git a/.codecov.yml b/.codecov.yml
new file mode 100644
index 00000000..1df71070
--- /dev/null
+++ b/.codecov.yml
@@ -0,0 +1,44 @@
+codecov:
+  notify:
+    require_ci_to_pass: true
+    # wait until at all test runners have uploaded a report (see the test job's build matrix)
+    # otherwise, coverage failures may be shown while some reports are still missing
+    after_n_builds: 10
+comment:
+  # this also configures the layout of PR check summaries / comments
+  layout: "reach, diff, flags, files"
+  # don't ever let the codecov bot comment on PRs
+  after_n_builds: 999999999
+coverage:
+  range: "50...100"
+  precision: 2
+  round: down
+  status:
+    changes: false
+    patch: false
+    # split up coverage reports by path
+    # don't set coverage targets and instead set coverage thresholds
+    project:
+      # we can't disable the overall default project, because only this will have PR check summaries / comments
+      # this replaces the PR comment
+      default:
+        target: 50
+      streamlink:
+        threshold: 1
+        paths:
+          - "src/streamlink/"
+          - "!src/streamlink/plugins/"
+      streamlink_cli:
+        threshold: 1
+        paths:
+          - "src/streamlink_cli/"
+      plugins:
+        # don't set a threshold on plugins
+        target: 30
+        paths:
+          - "src/streamlink/plugins/"
+      tests:
+        # new tests should always be fully covered
+        threshold: 0
+        paths:
+          - "tests/"
diff --git a/.coveragerc b/.coveragerc
index 742386c4..f99370cf 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -1,6 +1,7 @@
 [run]
 source =
     src
+    tests
 
 [report]
 omit =
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 3200d07a..a74d6186 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,7 +17,8 @@ jobs:
     name: Test
     strategy:
       fail-fast: false
-      # when changing the build matrix, the `after_n_builds` value in codecov.yml may need to be updated
+      # please remember to change the `codecov.notify.after_n_builds` value in .codecov.yml
+      # when changing the build matrix and changing the number of test runners
       matrix:
         os: [ubuntu-latest, windows-latest]
         python: [2.7, 3.5, 3.6, 3.7, 3.8]
@@ -36,7 +37,7 @@ jobs:
         run: bash ./script/install-dependencies.sh
       - name: Test
         continue-on-error: ${{ matrix.continue || false }}
-        run: pytest -r a --cov --cov-report=xml
+        run: pytest -r a --cov --cov-branch --cov-report=xml
       - name: Lint
         continue-on-error: ${{ matrix.continue || false }}
         run: flake8
diff --git a/codecov.yml b/codecov.yml
deleted file mode 100644
index 3d94e1bb..00000000
--- a/codecov.yml
+++ /dev/null
@@ -1,21 +0,0 @@
-codecov:
-  notify:
-    require_ci_to_pass: true
-    # wait until at least one linux and one windows build has succeeded (see the test job's build matrix)
-    after_n_builds: 6
-comment:
-  behavior: default
-  layout: header, diff
-  require_changes: false
-coverage:
-  precision: 2
-  range:
-  - 50.0
-  - 100.0
-  round: down
-  status:
-    changes: false
-    patch: false
-    project:
-      default:
-        target: 30
diff --git a/docs/plugin_matrix.rst b/docs/plugin_matrix.rst
index 48371bf2..08eb88bc 100644
--- a/docs/plugin_matrix.rst
+++ b/docs/plugin_matrix.rst
@@ -118,6 +118,7 @@ lrt                     lrt.lt               Yes   No
 ltv_lsm_lv              ltv.lsm.lv           Yes   No    Streams may be geo-restricted to Latvia.
 mediaklikk              mediaklikk.hu        Yes   No    Streams may be geo-restricted to Hungary.
 metube                  metube.id            Yes   Yes
+mico                    micous.com           Yes   --
 mitele                  mitele.es            Yes   No    Streams may be geo-restricted to Spain.
 mjunoon                 mjunoon.tv           Yes   Yes
 mrtmk                   play.mrt.com.mk      Yes   Yes   Streams may be geo-restricted to North Macedonia.
diff --git a/src/streamlink/plugins/mico.py b/src/streamlink/plugins/mico.py
new file mode 100644
index 00000000..2f2b40bb
--- /dev/null
+++ b/src/streamlink/plugins/mico.py
@@ -0,0 +1,72 @@
+import logging
+import re
+
+from streamlink.plugin import Plugin
+from streamlink.plugin.api import validate
+from streamlink.stream import HLSStream
+from streamlink.utils import parse_json
+from streamlink.utils.url import update_scheme
+
+log = logging.getLogger(__name__)
+
+
+class Mico(Plugin):
+    author = None
+    category = None
+    title = None
+
+    url_re = re.compile(r'https?://(?:www\.)?micous\.com/live/\d+')
+    json_data_re = re.compile(r'win._profile\s*=\s*({.*})')
+
+    _json_data_schema = validate.Schema(
+        validate.transform(json_data_re.search),
+        validate.any(None, validate.all(
+            validate.get(1),
+            validate.transform(parse_json),
+            validate.any(None, validate.all({
+                'mico_id': int,
+                'nickname': validate.text,
+                'h5_url': validate.all(
+                    validate.transform(lambda x: update_scheme('http:', x)),
+                    validate.url(),
+                ),
+                'is_live': bool,
+            })),
+        )),
+    )
+
+    @classmethod
+    def can_handle_url(cls, url):
+        return cls.url_re.match(url) is not None
+
+    def get_author(self):
+        if self.author is not None:
+            return self.author
+
+    def get_category(self):
+        if self.category is not None:
+            return self.category
+
+    def get_title(self):
+        if self.title is not None:
+            return self.title
+
+    def _get_streams(self):
+        json_data = self.session.http.get(self.url, schema=self._json_data_schema)
+
+        if not json_data:
+            log.error('Failed to get JSON data')
+            return
+
+        if not json_data['is_live']:
+            log.info('This stream is no longer online')
+            return
+
+        self.author = json_data['mico_id']
+        self.category = 'Live'
+        self.title = json_data['nickname']
+
+        return HLSStream.parse_variant_playlist(self.session, json_data['h5_url'])
+
+
+__plugin__ = Mico
diff --git a/src/streamlink/plugins/zattoo.py b/src/streamlink/plugins/zattoo.py
index b845c305..ce79fe98 100644
--- a/src/streamlink/plugins/zattoo.py
+++ b/src/streamlink/plugins/zattoo.py
@@ -19,6 +19,7 @@ log = logging.getLogger(__name__)
 class Zattoo(Plugin):
     API_CHANNELS = '{0}/zapi/v2/cached/channels/{1}?details=False'
     API_HELLO = '{0}/zapi/session/hello'
+    API_HELLO_V2 = '{0}/zapi/v2/session/hello'
     API_HELLO_V3 = '{0}/zapi/v3/session/hello'
     API_LOGIN = '{0}/zapi/v2/account/login'
     API_LOGIN_V3 = '{0}/zapi/v3/account/login'
@@ -158,18 +159,21 @@ class Zattoo(Plugin):
         # a new session is required for the app_token
         self.session.http.cookies = cookiejar_from_dict({})
         if self.base_url == 'https://zattoo.com':
-            app_token_url = 'https://zattoo.com/int/'
+            app_token_url = 'https://zattoo.com/client/token-2fb69f883fea03d06c68c6e5f21ddaea.json'
         elif self.base_url == 'https://www.quantum-tv.com':
             app_token_url = 'https://www.quantum-tv.com/token-4d0d61d4ce0bf8d9982171f349d19f34.json'
         else:
             app_token_url = self.base_url
-        res = self.session.http.get(app_token_url)
-        match = self._app_token_re.search(res.text)
 
+        res = self.session.http.get(app_token_url)
         if self.base_url == 'https://www.quantum-tv.com':
             app_token = self.session.http.json(res)["session_token"]
             hello_url = self.API_HELLO_V3.format(self.base_url)
+        elif self.base_url == 'https://zattoo.com':
+            app_token = self.session.http.json(res)['app_tid']
+            hello_url = self.API_HELLO_V2.format(self.base_url)
         else:
+            match = self._app_token_re.search(res.text)
             app_token = match.group(1)
             hello_url = self.API_HELLO.format(self.base_url)
 
@@ -180,10 +184,17 @@ class Zattoo(Plugin):
             self._session_attributes.set(
                 'uuid', __uuid, expires=self.TIME_SESSION)
 
-        params = {
-            'client_app_token': app_token,
-            'uuid': __uuid,
-        }
+        if self.base_url == 'https://zattoo.com':
+            params = {
+                'uuid': __uuid,
+                'app_tid': app_token,
+                'app_version': '1.0.0'
+            }
+        else:
+            params = {
+                'client_app_token': app_token,
+                'uuid': __uuid,
+            }
 
         if self.base_url == 'https://www.quantum-tv.com':
             params['app_version'] = '3.2028.3'

diff --git a/tests/plugins/test_mico.py b/tests/plugins/test_mico.py
new file mode 100644
index 00000000..cab44d96
--- /dev/null
+++ b/tests/plugins/test_mico.py
@@ -0,0 +1,23 @@
+import unittest
+
+from streamlink.plugins.mico import Mico
+
+
+class TestPluginMico(unittest.TestCase):
+    def test_can_handle_url(self):
+        should_match = [
+            'http://micous.com/live/73750760',
+            'http://www.micous.com/live/73750760',
+            'https://micous.com/live/73750760',
+            'https://www.micous.com/live/73750760',
+        ]
+        for url in should_match:
+            self.assertTrue(Mico.can_handle_url(url))
+
+    def test_can_handle_url_negative(self):
+        should_not_match = [
+            'http://www.micous.com/73750760',
+            'https://example.com/index.html',
+        ]
+        for url in should_not_match:
+            self.assertFalse(Mico.can_handle_url(url))

Zattoo (403 Client Error)
<!--
Thanks for reporting a plugin issue!
USE THE TEMPLATE. Otherwise your plugin issue may be rejected.

First, see the contribution guidelines:
https://github.com/streamlink/streamlink/blob/master/CONTRIBUTING.md#contributing-to-streamlink

Also check the list of open and closed plugin issues:
https://github.com/streamlink/streamlink/issues?q=is%3Aissue+label%3A%22plugin+issue%22

Please see the text preview to avoid unnecessary formatting errors.
-->


## Plugin Issue

<!-- Replace [ ] with [x] in order to check the box -->
- [x] This is a plugin issue and I have read the contribution guidelines.


### Description

<!-- Explain the plugin issue as thoroughly as you can. -->


### Reproduction steps / Explicit stream URLs to test

<!-- How can we reproduce this? Please note the exact steps below using the list format supplied. If you need more steps please add them. -->

1. streamlink -o "RTS Un SD.ts" https://zattoo.com/watch/rts_un 1500k --zattoo-email xxx@xxx.xxx --zattoo-password xxx


### Log output

<!--
TEXT LOG OUTPUT IS REQUIRED for a plugin issue!
Use the `--loglevel debug` parameter and avoid using parameters which suppress log output.
https://streamlink.github.io/cli.html#cmdoption-l

Make sure to **remove usernames and passwords**
You can copy the output to https://gist.github.com/ or paste it below.
-->

```
[plugin.zattoo][debug] Restored cookies: zattoo.session, pzuid, beaker.session.id
[cli][debug] OS:         Linux-4.19.0-0.bpo.6-amd64-x86_64-with-debian-9.13
[cli][debug] Python:     3.5.3
[cli][debug] Streamlink: 1.5.0
[cli][debug] Requests(2.24.0), Socks(1.7.1), Websocket(0.57.0)
[cli][info] Found matching plugin zattoo for URL https://zattoo.com/watch/rts_un
[cli][debug] Plugin specific arguments:
[cli][debug]  --zattoo-email=********@********.******** (email)
[cli][debug]  --zattoo-password=******** (password)
[cli][debug]  --zattoo-stream-types=['hls'] (stream_types)
[plugin.zattoo][debug] Session control for zattoo.com
[plugin.zattoo][debug] User is not logged in
[plugin.zattoo][debug] _hello ...
error: Unable to open URL: https://zattoo.com/zapi/session/hello (403 Client Error: Forbidden for url: https://zatt
oo.com/zapi/session/hello)
[1]    15604 exit 1     streamlink -o "RTS Un SD.ts" https://zattoo.com/watch/rts_un 1500
```


### Additional comments, screenshots, etc.



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tests/plugins/test_mico.py::TestPluginMico::test_can_handle_url tests/plugins/test_mico.py::TestPluginMico::test_can_handle_url_negative