Fix #13: add `Word#getRenderedWidth` and `...Height`.

I considered adding `Word#getShape`, and maybe will in the future,
but for now, this was all that was needed for checking bounds for
wordcrams with arbitrary shapes.
Merge branch 'master' into rel-057
Fix #12: default space-between-words to 1
Start a 0.5.7 section in release notes
Fix #5: allow multiple TextSources
Bump version to 0.5.7
Updating javadoc for 0.5.7 release.
For #15, move downloads from github to Amazon S3
Merge branch 'rel-057' into aws-downloads
Merge branch 'master' into rel-057
Merge branch 'master' into aws-downloads
Merge branch 'master' into rel-057
Merge branch 'master' into rel-057
Merge branch 'master' into aws-downloads
Add github->s3 to releasenotes for 0.5.7
Merge branch 'aws-downloads' into rel-057
Upgrade jsoup from 1.3.3 to 1.7.2
Fix #14: filter HTML texts by css selectors
Update 0.5.7 Release notes for #14 fix
Jsoup upgrade: forgot the .classpath. Here it is.