Version 0.7.1: latest algeff changes before merging with master

Version 0.6.0

Version 0.6.0-dev; last version without algebraic effects that can bu…

…ild Madoko

Merge with bigint

--HG--
branch : algeff

Updated test-suite to new syntax

Updated to new koka syntax, bump version to 0.6.0

Possible fix for building on MacOSX