Version 0.9.1

This release brings 2 core changes:

- `panic` inside a builder function no longer causes a memory leak.

This means that the previously documented workaround using `try_new` and
`catch_unwind` has become obsolete and the relevant example has been deleted.

- Limited support for owners with non static lifetimes. This mostly works with the exception of automatic derives, due to technical limitations (aka I can't figure out how to do it).

Bug fixes:

- An esoteric edge case could cause UB, see bb2f502 for more details.

- Defining your own Result could break the macro due to hygiene issues, see #16 (comment).

In addition a set of benchmarks comparing `self_cell` to `ouroboros` have been added, see `benchmarks` directory.

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "self_cell"
-version = "0.9.0"
+version = "0.9.1"
 authors = ["Lukas Bergdoll <[email protected]>"]
 edition = "2018"
 license = "Apache-2.0"