Merge pull request #4 from aixtal/locale_fix

Locale fix
add entry to changelog
Added debugging messages
Preparing ground for dynamically generated, locale-aware regexp
Preparing more ground
Future-proof of locale bugfix (commit 79f88f8002de921d29a3fb731acac2bd7a5f7f10)

This is done by building a regular expression that catches errors based on the locale of R
Simplified communication with R, resulting in speedup

This was achieved by wrapping commands for R much lighter (no tryCatch and eval) and using the locale-safe error-catching regexp introduced in the previous commit to catch all types of errors
Changelog update
Version 0.31