IDA: format & tweak (part 1) [add new options, rename some old, and add more options tests;  add _init_step and _solve methods]
IDA: format & tweak (part 1)
[add new options, rename some old, and add more options tests;
 add _init_step and _solve methods]

logicabrity/odes,logicabrity/odes,logicabrity/odes