Added a little more info to README.  Changed core_LogVerbose to be more of a nested stack trace to aid in debugging.  Removed a placeholder now that we have data in the folder.  Might consider modifying core_LogError to do the same... hmm.
Modified the docker test file to reflect a couple changes that affected the MD5 of the correct output of the sample file.  This might have actually been in a prior commit, oh well.  Removed the new_function call since that doesn't exist anymore in __shared.inc.
Created a TODO list for when I don't have internet access.  I should probably gitignore it... but going to add it in case I get lazy with feature requests and stuff in github.
Added the function to do indirect references.  I added an append flag, but this is an internal thing which means all callers would need append flags too, and this would be annoying to keep up with.  For simplicity's sake, removing that after this commit.
After realizing the hassle of pushing things like the append flag up from the core_IndirectAssignment function, I decided to remove it.  The function itself did indeed limit the use of eval, but not in a way that was helping anything.  It wasn't, and couldn't provide much more validation and aid so meh.  I'm removing it.
Built a little structure for the IndexOf function but I'm still not sure how to process the lookups quickly.  I need internet access to research best methods and that's hard to do at 38,000 feet...
Updated changelog and since I plan to push when I get a chance.
Updated the namespace tester to test multiple namespaces at once.
Wrote the first external script for SBT.  This is a simple awk script to get the Nth occurrence of a pattern within a string.  Seems to work but still need to write tests for it.  Might also want to consider letting it read a whole file, but then again how would that work with newlines?  I'd have to read in multiline mode and I don't know if that's even possible in awk.  Oh well, baby steps for now.
Wrote a function to modify the PATH for tool searching, avoids hard coding paths.  Finishing up the core_IndexOf function but I don't know how I want to safely reference the sbt/ext dir.  Once that's figured out, should be good to go and I can start adding lots more string manipulation functions.
Found a way to use coreutils to get directory of sourced core.sh file so I can derive the remaining values for SBT use.  Need to finish the test case for IndexOf and the SBT IndexOf function (including adding -1 to make it a zero base index).