sorttable bug: exponents

summary: handle exponents in numbers
class: wish · wish (a nice-to-have)
priority: low · This should be fixed when we get a sufficiently round tuit
fixed-in:
depends:

Handle numbers like 1.5e6 and 2.3e-6.

Current workaround: use custom keys to add the proper number (150000 and 0.0000023)