Inital embedded content parser (William Casarin)

search: switch to cursor_align function (William Casarin)

cursor: add align function (William Casarin)

cursor: fix some warnings (William Casarin)

cursor: fix empty string pushing in push_c_str (William Casarin)

cursor: add pull_varint_u32 (William Casarin)

cursor: add malloc_slice (William Casarin)

nostr_bech32: only parse up to raw bech32 buffers (William Casarin)

bech32: retab (William Casarin)

block: add bolt11 invoice encoding/decoding (William Casarin)

test: fix uint64 types (William Casarin)

make: cleanup a bit, separate bench running (William Casarin)

pushed to nostrdb:refs/heads/master

http://git.jb55.com/nostrdb/commit/7e2f2378b9621fb9d9eb71d4cce440c27fbd8c89.html