Log Message:
Updated package to latest version, 2.52. Changes include:
- Fix compatibility for 4.03 (#227)
- Various documentation fixes (#199,#200,#210,)
- Improve wildcard detection in the ppx (#198)
- Fix Lwt_stream: bounded_push#close wake the reader (#201)
- Fix infinite loop with Lwt_stream.choose (#214)
- Fix lazyness failure with Lwt_io.common#close (#207)