high

[code] Finish HDF [code] Finish Charts [code] Add Formulas.

medium

[code] Expose functionality in low level records in higher level API [code] Implement more record types (for other things ... not sure what this will mean yet). [code] Implement more record types (for other things ... not sure what this will mean yet). [code] Add more dummy checks (for when API user's do things they "can't" do) [code] Add support for embedded graphics and stuff like that. [code] Create new adapter object for handling MulBlank, MulRk, Rk records.