#136 "Errno"-like error handling in clients is replaced by error-signal emition

已合併

Viktor 於 7 年之前將 4 次代碼提交從 semlanik/feature_qgrpc_error_handling_108合併至 semlanik/master

作者	SHA1 備註	提交日期
Viktor Kopp	18e4078dc4 Remove deprecated ÁbstractClient::lastError-functionality (#108)	7 年之前
Viktor Kopp	a400a94f56 Async reply emits either error (failure) or finished (success) signals	7 年之前
Viktor Kopp	9eff09f395 Emit AbstractClient::error signal on unattached channel	7 年之前
Viktor Kopp	26a2bfb261 Introduce AbstractClient::error signal ( #108 #111 )	7 年之前