Update command PDF/PNG files for addition of uri-encode/decode.
Add uri primitive, update include guards and include sort, fix btc() value.
Add new URI primitive header to standard includes.
Fix copyleft alignment.
Add starts_with() function and remove VC warning suppressions.
Accomodate new settings uri types.
Add prop_tree() function for defining uri serialization.
Change VC suppression _SCL_SECURE_NO_WARNINGS to /wd4996 (boost conflict).
Add new uri-encode and uri-decode commands, tests, metadata and generated code.
Merge pull request #141 from evoskuil/version2

Add new uri-encode and uri-decode commands.