fix scrapping and marking questions

correct parse function

connect searching thread

connect is_spam

fun_train

upload code

clustering

services in separate folders

set ML port

app1 report invalid domain

app2 resend result on failure

remove comments

send and receive within single iteration

erase unnecessary TODO

fix absent .bashrc

fix unused variable

fix prompt for bash

detect shell

symbol.cpp support raw sequence

hex.cpp report error writing

symbol.cpp describe code formats

hex.cpp report if file not found

catch exceptions at char.cpp