Update checklist-for-pourover-creation.md

Add namespaces to example non-default functions (#971)

* Add namespaces to example non-default functions

* Apply suggestions from code review

Co-authored-by: Addison Phillips <addison@unicode.org>

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Co-authored-by: Addison Phillips <addison@unicode.org>

Fix attribute value to be literal (#894)

Fixes #893

Fix formatting (LDML45 cleanup) (#764)

* Fix formatting

* Fix @srl295's name

* Missing 'dfn' for bidi strategy

* Add 'dfn' to dynamic message

* Minor formatting fix

* Add missing 'dfn'

Add note to "Function Resolution" section about function argument and…

… result types (#686)

* Add note to "Function Resolution" section about function argument and result types

* Rephrase the 'result of a function call' sentence

* Rewrite the description of "composability"

Avoid using the word "interconvertible"

Include example of composability

Include example for how the function interface would be defined
in a typed implementation language

Add note about multiple interpretations of composition
that requests feedback

* Add specific text on selector functions

* Fix .local syntax in example

* Address various review comments

* Update spec/formatting.md

Co-authored-by: Richard Gibson <richard.gibson@gmail.com>

* Update spec/formatting.md

Co-authored-by: Eemeli Aro <eemeli@gmail.com>

* Add the words "a representation of" to allow implementations...

...to bundle their results with a "parsed" version of their input

* Update spec/formatting.md

Co-authored-by: Eemeli Aro <eemeli@gmail.com>

* Avoid use of 'input'/'output'

* Update spec/formatting.md

Co-authored-by: Addison Phillips <addisonI18N@gmail.com>

* Update spec/formatting.md

Co-authored-by: Addison Phillips <addisonI18N@gmail.com>

* Update spec/formatting.md

Co-authored-by: Mark Davis <mark@unicode.org>

* Update spec/formatting.md

Co-authored-by: Mark Davis <mark@unicode.org>

* Update spec/formatting.md

Co-authored-by: Mark Davis <mark@unicode.org>

* Update spec/formatting.md

Co-authored-by: Mark Davis <mark@unicode.org>

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Co-authored-by: Richard Gibson <richard.gibson@gmail.com>
Co-authored-by: Eemeli Aro <eemeli@gmail.com>
Co-authored-by: Addison Phillips <addisonI18N@gmail.com>
Co-authored-by: Mark Davis <mark@unicode.org>

feat: Drop res_id from MessageRef & all of message selection