`libuv` docs/stubs and readme updates

1.1.5

Update README.md

1.1.4: corrections, remove deprecated, use constant for invalid data, `libuv…

…` Idle function not needed so removed, name changes

1.1.3: update readme and stubs, tests, added signal example, and rename other

- update `uv_spawn` callback to just close all handles
- renamed function, allow to return results
- update readme about integration
- updated/added channnel class method to send kill to subprocess
- keep `libuv` doc/stubs in sync with [WIP] PR https://github.com/bwoebi/php-uv/pull/77

1.1.2

allow `SIGINT` to still be registored for other uses.

1.1.1: update docs, code clean up, added function to correct mixed encoded r…

…eturn results

- added `returning()` it is intended to have a fixed output result that can be easily removed from encoded results. It needs to be called before calling real `return` keyword, if used.
- update channeled class, removed flush references.
- no flush is needed, does not fix issue with mixed encoded return results.

1.1.0: rename `Channel` class to `Channeled` and corrections

 - For future use, so not interfere and be extendable with symplely/coroutine `Channel` class without naming conflicts.

removed unnecessary code, no progress yield needed

1.0.11

Update spawn.yml

1.0.10

It seems a delay will be needed to get proper return results, cause the return encoded value is getting attached/mixed with previous last output.

• added function to check valid base64, update tests
• setup GitHub Actions for Linux CI build
• build bug fixes

1.0.9: corrections, sent results should always be going to parent, not setup…

… resources/channels, and no casting

update required, check process before killing

1.0.8

Update Launcher.php