Merge pull request #104 from ApproxFun/master

sync master
Simplified AlmostBandedOperator
First attempt at rewrite
Fixed bugs
Tests pass again!
Readded @inbounds
fixed auto padding for fill
reenabled unsafe_getindex
data version
@inbounds for backsubstitution!
Fixed types for Circle/Line
Merge pull request #105 from ApproxFun/fix-band-matrix

Fix band matrix