## What
This change updates the description of when impression events are
fired to clarify that impression events are **not** fired in front-end
SDKs if the toggle is enabled.
It also adds a 'caution' admonition repeating this information with
some more info on why.
## Why
We've had a couple questions about this as it hasn't been clearly
stated before. Additionally, I, as a member of the team and the
original author of this document, thought that impression
events **did** fire for disabled toggles in the front-end.
As such, I consider this to be unexpected and different from what was
originally written.
* Docs: Update compatibility matrix for php
* Docs: Update php compatibility table to include IP CIDR syntax
* Docs: Update impression data documentation
* Docs: Mention JavaScript proxy clients in impression data support
* docs: add docs for impression data
* fix: update wording
* Update website/docs/advanced/impression_data.md
Co-authored-by: Thomas Heartman <thomas@getunleash.ai>
* Update website/docs/advanced/impression_data.md
Co-authored-by: Thomas Heartman <thomas@getunleash.ai>
* docs: use hyphen instead of underscore in file name and title/slug
We've been very inconsistent with our use of separators previously
(we should try and find a standard). Hyphens are most common online,
so I've switched to that instead.
* docs: use syntax highlighting for shell commands
* docs: start outlining impression data restructure.
* docs: Add impression data info to API: create toggles
* docs: Add impression data row to compatibility matrix
* docs: restructures the impression data reference doc.
* chore: remove question callout in source material
* docs: add redirect for `impression_data` -> 'impression-data'
* docs: Add sdk availability to availability note
* chore: Fix broken doc paths.
Co-authored-by: Thomas Heartman <thomas@getunleash.ai>
