adding case where block not in library
added filter, though it's still not working
fixing #76
new draft of the filter block (is a little more organised)
put the random block's random_int back to it's full range
Merge branch 'daemon' of https://github.com/mikedewar/streamtools into daemon
adding jsonutil getkeyvalues
Merge pull request #75 from nikhan/daemon

adding case where block not in library