Add simple examples

Remove scheduler restriction when not returning to main

Be less opinionated on fiber throwing

Allow suspending in destruct and register_shutdown_function

Since schedulers can be restarted, there isn't a reason to forbid suspending in a destruct or register_shutdown_function.

Allow re-entry of completed schedulers

Necessary for some nesting situations.

Delete reference to closure after starting fiber

Fix leak with invalid args to Fiber::create()

Rename fiber member

Add appveyor build

Fix test for better repeatability

Fix test cases for Windows (#4)

Fix Windows build

Remove unneeded include

Seems php_config.h is needed here.

Remove missed continuation class entry in header

Error on previously started fiber

Remove some GC nonsense

Dropping Continuations makes this unnecessary.

Update stubs

Add ReflectionFiber error test

Drop Continuation object

Don’t wrap exception thrown during shutdown

This was causing an assertion failure with RC5.

Restore error observer due to RC5 changes

Separate Fiber::run() into two methods

Allows for creating fibers without such deep nesting and adds ReflectionFiber::fromFiber().

Drop ReflectionFiber::getThis()

Fix ReflectionFiber::getTrace()

Allow creating ReflectionFiber from terminated fiber