xtimeout 0.1.0.1

Trace a timeout function call and handle with it

## [Chinese](README_zh.md)

## Check function with timeout for tracing or handle it

## Feature
* Check a function call is timeout or not.
* The timeout callback and function call are on the same thread.
* Multi-thread support. Nest call support.

## Usage
```python
def on_timeout(start_time: float):
"""
:param start_time:
"""
traceback.print_stack()
pdb.set_trace()
raise Exception("time_out")

# time unit is millisecond
@pymonitor.check_time(10, on_timeout)
def function_1():
pass

def function_2():
with pymonitor.check_context(20, on_timeout):
# do something
with pymonitor.check_context(10, on_timeout):
# do something
```

## Implementation Comparison
Here are some comparisons of the other implementations.

* Use `signal` module and emit a signal
- Only works in main thread.
- Not good for nest call becauseof one signal correspond one handler.
If you need nest support you need to enter the timeout function continually
and call `alarm`. The cost depend on your accuracy.
- Support Linux only.

* Start new thread for work and join it with a time, if it had timeout, handle with it (eg. terminate it)
- Can't inject the function call.
- Overhead from threading.

* Use `sys.settrace` keep tracing for each
- A huge cost for that.