version 2.0 released

Processing of decoded BUFR messages was extended. BUFR decoding of section 4 (data) can be skipped depending on fields in BUFR sections 1..3 with Geo::BUFR 1.33+. Multiple observations in an AMDAR message are allowed. The pseudo-BUFR (text) format was improved. Missing BUFR values are not reported as unprocessed. The CGI script recognises BUFR report types (IOB, IUA, ...). Decoding of binary BUFR messages was moved to src2raw.pm. Precipitation and cloud information is shown as list in one field instead of using 1..3 fields in the summary. Many smaller improvements were made and a few minor bugs were fixed.