ability to add sections
util.CmdOption: correctly unparsing List() options
merge
edits to corefgazetteers
merge
using redirect files in corefgazetteers
minor changes to ACE Loader
util.CmdOption: better handling of defaults in serialization
merge
Parameters: sparsify creates layered sparse tensors for efficiency
support for building jars only when using "-Pruntime" with maven
changed corefgazetteers to merge different wiki lexicons at load time. still need to do more efficiency improvements though.
# This is a combination of 8 commits.
# The first commit's message is:
optimize: a sketch for a new Classifier API

# This is the 2nd commit message:

classify: not having a Features in Classification by default

# This is the 3rd commit message:

more sketch

# This is the 4th commit message:

refining the sketch

# This is the 5th commit message:

making convenient trainer a bit more useful, goal is to replace many of our usages of trainers

# This is the 6th commit message:

evaluating on test data

# This is the 7th commit message:

cleaner evaluation API

# This is the 8th commit message:

big trainer change
optimize: infrastructure for classification
merge
fix: removing unused automatically-added import