Fixed a polynomial printing bug.
Fixed a parseint bug.
Basic power series type and arithmetic.
Fix power series precision for multiplication.
Fixed some bugs and added shift_left/right for power series.
Added isunit.
Added inversion, divexact, truncate for power series.
Remove definition /(a::Int, b::Int)and don't use in examples in docs.
Allow inversion of length 1 infinite precision power series.
Fixed division of power series where denominator has nonzero valuation.
Added documentation of power series constructors and type.
Added documentation of basic manipulation of power series.
Added documentation of ad hoc operators, two new such operators and fixed bugs
in the existing ones.
Added comparison and ad hoc comparison of power series to docs and added some
new ad hoc comparisons.
Fix section heading error.
Finish documenting division, inversion and fix a bug.
That is definitely a bug in Julia.
Implement better inv for power series.
Save some more time in inv.
Refactored code and fixed some bugs.