Ignoring private notes file.
Additions & Fixes:
* Base sequences for math type: $$hex 0xHex 0oct 0oOct %bin 0bBin and num_base
* Fix to calc struct to allow $$hex form
* Added escape test and moved one letter key regression test to regression static (derp).
* Some commenting added.
* String type now escapes $ when writing it to rpl data files.
* Added String.escaped
* Now raises an exception when l/rvalue is missing from math.
* Added base tests to calc and some more commenting.