Documentation: Better separation of scaling and HA concerns

See merge request gitlab-org/gitlab!28179

Fix footnote examples in Markdown docs

See merge request gitlab-org/gitlab!27686

Update deployments.md

See merge request gitlab-org/gitlab!25267

Adds docs for limiting metric embeds

See merge request gitlab-org/gitlab!28135

Append inapplicable rules when creating MR

See merge request gitlab-org/gitlab!27886

Remove tooltip from New issue button on issue page and project issues list page and project empty issues list page

See merge request gitlab-org/gitlab!28261

Remove tooltip from New issue button on issue page and project issues list page and project empty issues list page

Resolve "Webhooks do not show when Discussion Lock changes"

Closes #212452

See merge request gitlab-org/gitlab!28018

Resolve "Remove  export_fast_serialize feature flag"

See merge request gitlab-org/gitlab!28037

- Remove feature flag from specs
- Remove feature flag from LegacyTreeSaver

Speed up project templates API specs

See merge request gitlab-org/gitlab!28260

Default issue health status feature flag to on

See merge request gitlab-org/gitlab!28146

Update graphql statistics  holders to GraphQL::FLOAT_TYPE

See merge request gitlab-org/gitlab!23131

Add tracking events in API::ContainerRegistryEvent

Closes #20378

See merge request gitlab-org/gitlab!27001

Replace underscore with lodash in env folder

Closes #196673

See merge request gitlab-org/gitlab!27160

- replaced underscore functions with lodash equivalents
- moved chain to flow as the babel plugin for lodash
  does not support chain
- used composition instead https://medium.com/making-internets/why-using-chain-is-a-mistake-9bc1f80d51ba
- used partial right for sortBy
  https://stackoverflow.com/questions/56324387/jest-throwing-typererror-expected-a-function-when-using-lodash-pipe-flow
- escape, isFunction, isUndefined, isNull, omit, chain, isEqual,
  and isEmpty

Replaces underscore with lodash `ee/app/assets/javascripts/environments`

See merge request gitlab-org/gitlab!28292

Link references in CI docs

See merge request gitlab-org/gitlab!28277

Removes final cases of markdown reference links
from ci docs.

Resolve Migrate '.fa-spinner' to '.spinner' for 'ee/app/views/projects/settings'

See merge request gitlab-org/gitlab!25038

Fix duplicate query problem in `boards/issues`

See merge request gitlab-org/gitlab!27505

Prevent issues of being promoted twice

See merge request gitlab-org/gitlab!27837

De-duplicate GlRepository EE specs

See merge request gitlab-org/gitlab!27952

When creating an MR, we need to associate all the rules to the MR
so they will still be available when MR's target branch changes.

This will be useful when FE starts to filter rules on MR create.

Make a sentence clearer in Markdown doc

Closes #211987

See merge request gitlab-org/gitlab!28217

Document limit on emails from auto-responders

See merge request gitlab-org/gitlab!28137

Remove rspec-set gem

Closes #27922

See merge request gitlab-org/gitlab!28282

We've removed all instances of `set` and have moved them all over to
use `let_it_be`

This does update the schema, but does not require large updates in the frontend, as opposed to Types::BigInt which would require string -> number casting. 
GraphQL-induced type casting should prevent type issues according to https://spec.graphql.org/June2018/#sec-Float

The values allowed in this type should suffice for the foreseeable future.

Also  updated the changelog to document this limitation.

This would currently fail due to graphql-constraints on integer types (which is of range -2^31 .. 2^31-1)