Accumulated non-code adjustments; TODO.LSA
Crash handler. All uncatch exceptions are beautifully formatted and logged.
Minor tweaks to crash handler. Post-processor can render animates of text and
lines. Instead of hard coded nodes, edge, pos. See `example/force.dyna`
Fixed late aggregator assignment. Added REPL test.
Pickling Interpreter state seems to work.
added load and save scripts.
tiny tweaks.
Circuit visualizer is not a post-processer called draw_circuit

clean up cmd-line args
misc cleanup.
Take a stab at fixing up = vs ==

Adds examples/equalities.dyna to selftests.
Placeholder docs page for builtins
Fix bugs in parser and add tests

Notably, this fixes the parser backtracking all the way to the start when it
encounters an operator it doesn't know about.  While here, token-ize
constituent parsers and move parser export types to their own module.
First pass at "bulk loader" API -- at the moment loading is only supported at
the REPL (cmd-line interface coming soon).

 - Read tsv/csv format

 - matrix-like

 - S-Expression - work in progress

Exceptions and errors handlers live in their on module.

Added `pycall` -- a more convenient way to do `eval` and `mod`
()
added repl data loading example.
refactor load and post-process. both are availabl and the REPL and command-line (see test/repl/load.bash for example usage)