Better error reporting for compiled code

[farskipper]

Catch JS errors in compiled code and use source-maps to get the KRL line and excerpt

i.e. calling a function that is not defined, or having a "native" module throw an error

[b1conrad]

example, this function which calls filter without passing in a function: vehicles = function() { Subscriptions:getSubscriptions().filter(v,k){ v{"attributes"}{"subscriber_role"} == "vehicle" } }

[0joshuaolson1]

Once this work begins, I think it should be labeled 'Ongoing' rather than 'Working', at least until this can be split into more specific issues.

[0joshuaolson1]

The standard library has better error reporting now (with even better planned). Library modules are next. One remaining scope is user-defined modules.

[farskipper]

As of 0.43 the compiler emits line/col specific error messages. There are more compiler checks that can be added.

The runtime error handling should use source-maps to point to the location in the krl source file.