restructure bills, bump version, add changelog, add readme for npm, add (#441)

Author: zupzup

CHANGELOG.md

@@ -0,0 +1,11 @@
+# 0.3.1
+
+* Restructured `BitcreditBillWeb` to a more structured approach, separating `status`,
+`data` and `participants` and adding the concept of `current_waiting_state`, to
+have all data available, if the bill is in a waiting state.
+    * Added the concept of `redeemed_funds_available` on `status`, to indicate if
+    the caller has funds available (e.g. from a sale, or a paid bill)
+
+# 0.3.0
+
+* First version exposing a WASM API

crates/bcr-ebill-api/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bcr-ebill-api"
-version = "0.3.0"
+version = "0.3.1"
 edition = "2024"
 
 [lib]