v2.5.0: if_exists, placeholders in step arguments, bare with and repeat, and the card editor's new layout
Merge branch 'wiki310'
# Conflicts:
# Configuration-Reference.md
# List-Entries.md
# Repeating-a-Template.md
v2.4.0: |flat after a repeat lays a nested repeat out in one list
Reorganise the docs: how it fits together, three complete references, and every page checked against the code
New pages: How It Fits Together (the map of templates, values, repeats and tools), Placeholder Reference (every step with an example and what it does with an empty value), and Repeat Reference (every for_each_from key, which filters each source reads, what each copy is given). Configuration Reference now covers every key with an example. Using Templates lists every card key up front, rebuild_on included. The how-to pages link into the references instead of keeping their own tables, and the wrong claims found checking them against the code are fixed: variables as a mapping is accepted, labels reads only the entity's own, exclude as a mapping matches all of its filters, round keeps trailing zeros only inside text, and more.
From discussion #310.
v2.4.0: placeholders in repeat sources, a fill's values by dotted name, health in the card editor, manual install takes every file
v2.3.2: empty copies leave their list, fills in the debug report
v2.3.1: item templates extend, HA text never runs as code, late cards in the report
List Entries: show what a repeat: gives the card
List Entries: drop the repeated opening paragraph
List entries (with:, repeat:, item templates) and values for a whole dashboard, for v2.3.0