add isoweek extractor to extract the ISO8601 week.
add isoweek accessor test for a tricky date
Couple of changes based on hadley's suggestions on my pull request
replace call to .select_formats with call to select_formats (argument)
Merge pull request #205 from peytonm/master

replace call to .select_formats with call to select_formats (argument)
document the use of select_formats in parse_date_time
Merge pull request #208 from vitoshka/master

document the use of select_formats in parse_date_time
updating email address for maintainer
removing deprecated representation argument from s4 class definitions. Fixes #211
Merge branch 'master' of git://github.com/ijlyttle/lubridate into ijlyttle-master
ensure integer return value and handle dates in isoweek

Final division changed to integer division in isoweek.  In addition,
input coerced to POSIXct using ISOdate to ensure classes match for
substraction of nearest thursday (nth) and january 1st (jan1).
Previously, date input resulted in Date - POSIXct.
Add isoweek vector tests to test-accessors.R
Merge branch 'master' of git://github.com/jasonelaw/lubridate into jasonelaw-master
generating documentation for new functions
removing documentation for obsolete format_offset
updating documentation to comply with R CMD check
changes required by CRAN's R CMD check for R 3.0.2
adds olson_time_zones support for Solaris, issue #215

adds another member to tzfile_candidate in olson_time_zones()