Release 1.3.0

The following features and bug fixes were provided for the Dogelog player of version 1.3.0:

Language Reference

The predicate absolute_file_name/2 now evaluates relative paths.
New predicate absolute_file_name/3 introduced.
New error checking in DCG translation introduced.
New unification spilling in DCG translation introduced.
The _ prefix now supresses answer substitution display.
The _ prefix now supresses singleton warning display.
The predicate sort/2 moved from library(compat) to library(lists).
The predicate keysort/2 moved from library(compat) to library(lists).
New predicate free_variables/3 in library(lists) introduced.
New predicate firstof/2 in library(sequence) introduced.
New predicate random/3 in library(math) introduced.
New library(plot) in package tester introduced.

Host Interface

JavaScript float formatting now uses half-even rounding.
Java float formatting now uses half-even rounding.
Less flicker in Dogelog Notebook cell colorizing.

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