util.stanza: Add method for extracting a single attribute value Sometimes you only care about a single attribute, but the child tag itself may be optional, leading to needing `tag and tag.attr.foo` or `stanza:find("tag@foo")`. The `:find()` method is fairly complex, so avoiding it for this kind of simpler use case is a win.

mod_time: Remove obsolete XEP-0090 support Deprecated even before Prosody even started, obsolete for over a decade.

util.datetime: Update Teal interface description Integers were required before, now any number should work.

util.datetime: Remove a line No idea why the locals were declared on a line by itself. Perhaps line length considerations? But saving 6 characters in width by adding a whole line with 47 characters seems excessive. This is still within the 150 character limit set by .luacheckrc

mod_time: Return sub-second precision timestamps Because why not? Who even has this module enabled?

mod_storage_sql: Drop archive timestamp precision pending schema update The "when" column is an INTEGER which will probably be unhappy about storing higher precision timestamps, so we keep the older behavior for now.

mod_mam: Store archives with sub-second precision timestamps Changes sub-second part of example timestamp to .5 in order to avoid floating point issues. Some clients use timestamps when ordering messages which can lead to messages having the same timestamp ending up in the wrong order. It would be better to preserve the order messages are sent in, which is the order they were stored in.

util.datetime: Add support for sub-second precision timestamps Lua since 5.3 raises a fuss when time functions are handed a number with a fractional part and the underlying C functions are all based on integer seconds without support for more precision.

util.datetime: Fix argument order in tests The expected value goes first.

util.signal: Fix name conflict in Teal interface declaration