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20120917 (840 prefixes)
  added: category,ero,interval
20120905 (837 prefixes)
  added: flow,osmsemnet,wfprov

  new subclass RDF::NS::URIS to get URI objects

20120829 (834 prefixes)
  added: mpeg7,myprefix,ngeoi,okg

20120827 (830 prefixes)
  added:   acco,admssw,aers,arg,br,cao,cogs,dive,dpl,eprints,eumida,germplasm,
           intervals,lctr,lemon,library,life,marl,muni,ncbitaxon,no,npgd,npgg,
           npgx,open,pav,pkmn,pml,poder,pol,r4ta,rda,rdagr1,rssynd,sdgp,set,sgv,
           spif,tcga
  changed: acm,crm,prism,prv,s4ac

  new methods PREFIX,PREFIXES, and REVERSE

20120521 (791 prefixes)
  added:   d2r,efo,enhancer,fcm,fise,fl,fls,oboe,pccz,rdrel,rec54

20120426 (780 prefixes)
  added:   aerols,carfo,cerif,cheminf,cts2,example,func,geom,gldp,goef,hg,ipad,
           isbd,kupkb,lexvo,lr,lv,marcrel,metalex,mohammad,npg,nsogi,oac,ogorg,
           omv,onssprel,ospost,pay,pf,pne,prism21,pro,prviv,ql,r2rml,rating,
           recipe,scufl2,ssn,vapour,vsws,wbc,wbp,wkd,wp,wscaim,xkos
  changed: linkedct,nfo,pc,prov,xhtml

20120124 (733 prefixes)
  added:   arecipe,calli,cis,datafaqs,db,dwc,ends,eunis,georss,identity,italy,
           jita,moby,np,ocd,places,pna,protegedc,swpatho,transit,voidp,vsr,
           wfdesc,wikipedia
  changed: daiaserv,media,nfo

20111208 (716 prefixes)
  added:   calli,dwc,eunis,georss,pna,swpatho,voidp

  introduced blank nodes in RDF::NS::Trine
  extended command line tool to expand QNames

20111124 (709 prefixes)
  added:   gnd,grs,htir,infosys,muto,omapi,prf,webbox
  changed: commerce
  removed: uri

  modified command line tool option syntax

20111102 (702 prefixes) 
  new command line tool 'rdfns'
  added:   vsw

20111031 (701 prefixes)
  first release at CPAN
  added:   daiaserv,vvo

20111028
  first full-featured version