ADDED: xref_source/2: option module(Module) to specify the default context.
ADDED: prolog_colourise_stream/3 to pick the module context from the
cross-referencer.
Updated xpce
Library(prolog_colour) to emit tokens for {...} used as ordinary
goals.
Updated package pengines
ADDED: Package CQL
Integrate CQL into the build system
Updated cql
QLF compile cql/cql
Updated xpce
Included CQL
Preparing version 7.1.24
Updated cql
FIXED: trace: skip on retry of previously skipped goal showed the same port
twice.  Kilian Evang.
Updated semweb
Updated pengines
Updated pengines
ADDED: library(sandbox): allow for use_module/2 (under restrictions).
Updated cql
FIXED: term_string/3: Crash when reading comments using comments(-Comments)
option.