YAML Parsing Error Causes Segmentation Violation

[nsoblath]

I removed a colon in a valid config file to produce an error and Katydid crashed. Needless to say, that's undesirable.

10:30:05 [ERROR] ndLineHandler.cc(306): Argument <PrintInfoTypo.yaml> does not match --<name>=<value> pattern
10:30:05 [ INFO] KTApplication.cc(102): Final configuration:

{
}

10:30:05 [ERROR] ndLineHandler.cc(306): Argument <PrintInfoTypo.yaml> does not match --<name>=<value> pattern
10:30:05 [ PROG] cessorToolbox.cc(47): Configuring . . .

 *** Break *** segmentation violation
[/usr/lib/system/libsystem_platform.dylib] _sigtramp (no debug info)
[/usr/lib/dyld] initialPoolContent (no debug info)
[/Users/obla999/Work/Project8/Software/Katydid/build-develop-debug/lib/libKatydidTime.dylib] scarab::param_node::array_at(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) const /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/map:1222
[/Users/obla999/Work/Project8/Software/Katydid/build-develop-debug/lib/libNymph_Katydid.dylib] Nymph::KTProcessorToolbox::Configure(scarab::param_node const*) /Users/obla999/Work/Project8/Software/Katydid/Nymph/Library/Application/KTProcessorToolbox.cc:49
[/Users/obla999/Work/Project8/Software/Katydid/build-develop-debug/lib/libNymph_Katydid.dylib] Nymph::RunNymph(std::__1::shared_ptr<Nymph::KTApplication>) /Users/obla999/Work/Project8/Software/Katydid/Nymph/Library/Application/KTRunNymph.cc:36
[/Users/obla999/Work/Project8/Software/katydid/build-develop-debug/bin/Katydid] main /Users/obla999/Work/Project8/Software/Katydid/Source/Executables/Main/Katydid.cc:56
[/usr/lib/system/libdyld.dylib] start (no debug info)