update readme

README.md

@@ -63,8 +63,8 @@ are always fresh, it's not possible to easily guess a valid Julid if you already
 The extension, when loaded into SQLite, provides the following functions:
 
  * `julid_new()`: create a new Julid and return it as a `blob`
- * `julid_seconds(julid)`: get the number milliseconds since the UNIX epoch that this julid was
-   created
+ * `julid_seconds(julid)`: get the number seconds (as a 64-bit float) since the UNIX epoch that this
+   julid was created
  * `julid_counter(julid)`: show the value of this julid's monotonic counter
  * `julid_sortable(julid)`: return the 64-bit concatenation of the timestamp and counter
  * `julid_string(julid)`: show the [base-32 Crockford](https://en.wikipedia.org/wiki/Base32)
@@ -113,3 +113,14 @@ will also include trait implementations for using Julids with
 feature, `chrono`, uses the Chrono crate to return the timestamp as a
 [`DateTime`](https://docs.rs/chrono/latest/chrono/struct.DateTime.html) by adding a `created_at()`
 method to `Julid` instances.
+
+# Thanks
+
+This crate wouldn't have been possible without a lot of inspiration (and a little shameless
+stealing) from the [ulid-rs](https://github.com/dylanhart/ulid-rs) crate, as well as the
+[sqlite-loadable-rs](https://github.com/asg017/sqlite-loadable-rs) crate, which made it *extremely*
+easy to write the SQLite extension. Thank you, authors of those crates! Feel free to steal from this
+project! (though I did submit a [pull request](https://github.com/asg017/sqlite-loadable-rs/pull/13)
+to the sqlite-loadable-rs project, to add an entrypoint macro that returns
+[`SQLITE_OK_LOAD_PERMANENTLY`](https://www.sqlite.org/rescode.html#ok_load_permanently), which would
+let me use that instead of manually implementing the entrypoint to return that)