v0.3.3

Fix performance problem pooling strings (#63)

* optimize pooling of stringarray

* minor change

* test pooling pooled arrays

v0.3.2

allow collect_structarray from a given starting point (#61)

v0.3.1

Add reminder on rowcmp

v0.3.0

switch to GroupPerm for efficient sortperm (#59)

v0.2.4

add maptiedindices (#57)

v0.2.3

allow comparison optimizations in TiedIndices (#56)

v0.2.2

Document custom data layout

v0.2.1

Export fieldarrays (#50)

v0.2.0

test fallback constructor

v0.1.0

refactor foreach_expr (#21)

* refactor foreach_expr

* use integers for tuples and symbols otherwise

* test tuple push and setindex

* ups

* move to utils