# Release 2.21.0

## TensorFlow

<INSERT SMALL BLURB ABOUT RELEASE FOCUS AREA AND POTENTIAL TOOLCHAIN CHANGES>

### Breaking Changes

* <DOCUMENT BREAKING CHANGES HERE>
* <THIS SECTION SHOULD CONTAIN API, ABI AND BEHAVIORAL BREAKING CHANGES>

### Known Caveats

* <CAVEATS REGARDING THE RELEASE (BUT NOT BREAKING CHANGES).>
* <ADDING/BUMPING DEPENDENCIES SHOULD GO HERE>
* <KNOWN LACK OF SUPPORT ON SOME PLATFORM, SHOULD GO HERE>

16FE5..16FEF  ; disallowed                             # NA   <reserved-16FE5>..<reserved-16FEF>
16FF0..16FF1  ; valid                                  # 13.0 VIETNAMESE ALTERNATE READING MARK CA..VIETNAMESE ALTERNATE READING MARK NHAY
16FF2..16FFF  ; disallowed                             # NA   <reserved-16FF2>..<reserved-16FFF>

### Expanded CLI support for debugging workloads and nodes

SIG CLI expanded on debugging with `kubectl` to support two new debugging workflows: debugging workloads by creating a copy, and debugging nodes by creating a container in host namespaces. These can be convenient to:
 - Insert a debug container in clusters that don’t have ephemeral containers enabled 

These last **three consecutive releases** are independent so that you can **migrate gradually**:

* First to FastAPI `0.68.2`, with no breaking changes, but upgrading all the sub-dependencies.
* Next to FastAPI `0.69.0`, which upgrades Starlette to `0.15.0`, with AnyIO support, and a higher chance of having breaking changes in your code.

$hr-opacity;\n}\n\n\n// Typography\n//\n// 1. Remove top margins from headings\n//    By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top\n//    margin for easier control within type scales as it avoids margin collapsing.\n\n%heading {\n  margin-top: 0; // 1\n  margin-bottom: $headings-margin-bottom;\n  font-family: $headings-font-family;\n  font-style: $headings-font-style;\n  font-weight: $headings-font-weight;\n  line-height: $headings-line-height;\n  color: var(--#{$prefix}heading-color);\n}\n\nh1...

error if FIPS 140-3 mode can't be enabled. func Supported() error { // Keep this in sync with fipsSupported in cmd/dist/test.go. // ASAN disapproves of reading swaths of global memory in fips140/check. // One option would be to expose runtime.asanunpoison through // crypto/internal/fips140deps and then call it to unpoison the range // before reading it, but it is unclear whether that would then cause // false negatives. For now, FIPS+ASAN doesn't need to work. if asanEnabled { return errors.New("FIPS...

&:hover,\n  &:focus,\n  &:active {\n    @content;\n  }\n}\n","// stylelint-disable selector-list-comma-newline-after\n\n//\n// Headings\n//\n\nh1, h2, h3, h4, h5, h6,\n.h1, .h2, .h3, .h4, .h5, .h6 {\n  margin-bottom: $headings-margin-bottom;\n  font-family: $headings-font-family;\n  font-weight: $headings-font-weight;\n  line-height: $headings-line-height;\n  color: $headings-color;\n}\n\nh1, .h1 { @include font-size($h1-font-size); }\nh2, .h2 { @include font-size($h2-font-size); }\nh3, .h3 { @include...