Release 1.42.0 (#1224)

* Update markdown table CSS

* 1.42.0/auth (#1221)

* Add pages and redirects

* Update streamlit.json

* Update experimental_user for Community Cloud

* Update RefCards

* Update user RefCard

* Update streamlit.json

* Typo and style

* Move st.context

* Update streamlit.json

* Update streamlit.json

* Update streamlit.json

* Update streamlit.json

* Authentication concept page

* What's new, release notes, cheat sheet

* Ref cards

* Bump embedded app versions

* Dataframe column sort and pin

* Move authentication to separate PR

* Authentication guide (#1225)

* Authentication guide

* Review edits

* Add link to authenticatino guide

Author: sfc-gh-dmatthews

content/develop/api-reference/_index.md

@@ -195,6 +195,29 @@ Display a horizontal rule.
 st.divider()
 ```
 
+</RefCard>
+<RefCard href="/develop/api-reference/text/st.help">
+
+<h4>Get help</h4>
+
+Display object’s doc string, nicely formatted.
+
+```python
+st.help(st.write)
+st.help(pd.DataFrame)
+```
+
+</RefCard>
+<RefCard href="/develop/api-reference/text/st.html">
+
+<h4>Render HTML</h4>
+
+Renders HTML strings to your app.
+
+```python
+st.html("<p>Foo bar.</p>")
+```
+
 </RefCard>
 </TileContainer>
 
@@ -1891,6 +1914,47 @@ rain(emoji="🎈", font_size=54,
 
 ## App logic and configuration
 
+### Authentication and user info
+
+<br />
+
+<TileContainer>
+<RefCard href="/develop/api-reference/user/st.login">
+
+<h4>Log in a user</h4>
+
+`st.login()` starts an authentication flow with an identity provider.
+
+```python
+st.login()
+```
+
+</RefCard>
+<RefCard href="/develop/api-reference/user/st.logout">
+
+<h4>Log out a user</h4>
+
+`st.logout()` removes a user's identity information.
+
+```python
+st.logout()
+```
+
+</RefCard>
+<RefCard href="/develop/api-reference/user/st.user">
+
+<h4>User info</h4>
+
+`st.experimental_user` returns information about a logged-in user.
+
+```python
+if st.experimental_user.is_logged_in:
+  st.write(f"Welcome back, {st.experimental_user.name}!")
+```
+
+</RefCard>
+</TileContainer>
+
 ### Navigation and pages
 
 <br />
@@ -2152,6 +2216,18 @@ st.query_params[key] = value
 st.query_params.clear()
 ```
 
+</RefCard>
+<RefCard href="/develop/api-reference/user/st.context">
+
+<h4>Context</h4>
+
+`st.context` provides a read-only interface to access cookies and headers.
+
+```python
+st.context.cookies
+st.context.headers
+```
+
 </RefCard>
 
 </TileContainer>
@@ -2370,62 +2446,6 @@ iframe(
 
 </TileContainer>
 
-### Utilities and user info
-
-<br />
-
-<TileContainer>
-<RefCard href="/develop/api-reference/utilities/st.context">
-
-<h4>Context</h4>
-
-`st.context` provides a read-only interface to access cookies and headers.
-
-```python
-st.context.cookies
-st.context.headers
-```
-
-</RefCard>
-<RefCard href="/develop/api-reference/utilities/st.help">
-
-<h4>Get help</h4>
-
-Display object’s doc string, nicely formatted.
-
-```python
-st.help(st.write)
-st.help(pd.DataFrame)
-```
-
-</RefCard>
-<RefCard href="/develop/api-reference/utilities/st.html">
-
-<h4>Render HTML</h4>
-
-Renders HTML strings to your app.
-
-```python
-st.html("<p>Foo bar.</p>")
-```
-
-</RefCard>
-<RefCard href="/develop/api-reference/utilities/st.experimental_user" size="full">
-
-<h4>User info</h4>
-
-`st.experimental_user` returns information about the logged-in user of private apps on Streamlit Community Cloud.
-
-```python
-if st.experimental_user.email == "foo@corp.com":
-  st.write("Welcome back, ", st.experimental_user.email)
-else:
-  st.write("You are not authorized to view this page.")
-```
-
-</RefCard>
-</TileContainer>
-
 ### Configuration
 
 <br />

content/develop/api-reference/caching-and-state/_index.md

@@ -49,12 +49,24 @@ def init_model():
 
 </TileContainer>
 
-## Manage state
+## Browser and server state
 
 Streamlit re-executes your script with each user interaction. Widgets have built-in statefulness between reruns, but Session State lets you do more!
 
 <TileContainer>
-<RefCard href="/develop/api-reference/caching-and-state/st.session_state" size="half" >
+<RefCard href="/develop/api-reference/utilities/st.context">
+
+<h4>Context</h4>
+
+`st.context` provides a read-only interface to access cookies and headers.
+
+```python
+st.context.cookies
+st.context.headers
+```
+
+</RefCard>
+<RefCard href="/develop/api-reference/caching-and-state/st.session_state">
 
 <h4>Session State</h4>
 
@@ -65,7 +77,7 @@ st.session_state["foo"] = "bar"
 ```
 
 </RefCard>
-<RefCard href="/develop/api-reference/caching-and-state/st.query_params" size="half">
+<RefCard href="/develop/api-reference/caching-and-state/st.query_params">
 
 <h4>Query parameters</h4>
 
@@ -84,39 +96,6 @@ st.query_params.clear()
 
 <TileContainer>
 
-<RefCard href="/develop/api-reference/caching-and-state/st.experimental_memo" deprecated={true}>
-
-> This command was deprecated in version 1.18.0. Use `st.cache_data` instead.
-
-<h4>Memo</h4>
-
-Experimental function decorator to memoize function executions.
-
-```python
-@st.experimental_memo
-def fetch_and_clean_data(url):
-  # Fetch data from URL here, and then clean it up.
-  return data
-```
-
-</RefCard>
-
-<RefCard href="/develop/api-reference/caching-and-state/st.experimental_singleton" deprecated={true}>
-
-> This command was deprecated in version 1.18.0. Use `st.cache_resource` instead.
-
-<h4>Singleton</h4>
-
-Experimental function decorator to store singleton objects.
-
-```python
-@st.experimental_singleton
-def get_database_session(url):
-  # Create a database session object that points to the URL.
-  return session
-```
-
-</RefCard>
 <RefCard href="/develop/api-reference/caching-and-state/st.experimental_get_query_params" size="half" deprecated={true}>
 
 <h4>Get query parameters</h4>

content/develop/api-reference/utilities/context.md renamed to content/develop/api-reference/caching-and-state/context.md

@@ -1,6 +1,6 @@
 ---
 title: st.context
-slug: /develop/api-reference/utilities/st.context
+slug: /develop/api-reference/caching-and-state/st.context
 description: st.context displays a read-only dict of cookies and headers
 ---