add link to active fork

added html <input> fields builder to Request class

seems that Danske bank also requires mb_strlen for calculation, so instead of another *iPizza extension I'll add the fix into iPizza itself via constructor parameter

get rid of debug code

updated pangalink.net test enviroment endpoint urls

force UTF-8 encoding when calculating string length, but leave original string length for actual signature generation

Added separate iPizza class for Swedbank (need mb_strlen instead of strlen for Swedbank)

convert all data to UTF-8 before verification

return proper response encoding, taking encoding field into account

Use strlen instead of mb_strlen for all iPizza hash generations

added .idea to gitignore

added Nordea general payment request test

Added a warning about Solo payment response containing much less data than other protocols

Finished implementing Solo protocol for payment requests

bump php version requirement to 5.3.3, added mbstring & openssl to require list