New --await flag is an option to synchronize on transaction execution
for CLI commands.
Closes#3244
Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
If main transaction is known, then conflicting transaction shouldn't be
valid longer than the main one.
Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
CLI side method for canceling not yet accepted transaction. It's
alternative to unsupported `canceltransaction` RPC method.
Close#3151.
Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
