call out breaking changes inline in readme
call out breaking changes inline in readme

suguru03/async,arigo-software/async,suguru03/async,rlugojr/async,andalm/async,caolan/async,caolan/async,ecasilla/async,steverobb/async,jnordberg/async,hargasinski/async,ecasilla/async,ezubarev/async,hargasinski/async,andalm/async,jnordberg/async,ezubarev/async,arigo-software/async,steverobb/async,rlugojr/async