Allow granular per-chat reminder configuration

Cargo.lock

@@ -53,7 +53,7 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a941c39708478e8eea39243b5983f1c42d2717b3620ee91f4a52115fd02ac43f"
 dependencies = [
- "itertools",
+ "itertools 0.9.0",
  "proc-macro-error",
  "proc-macro2",
  "quote",
@@ -195,6 +195,7 @@ dependencies = [
  "diesel",
  "diesel_migrations",
  "ical",
+ "itertools 0.12.0",
  "log",
  "once_cell",
  "pretty_env_logger",
@@ -920,6 +921,15 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25db6b064527c5d482d0423354fcd07a89a2dfe07b67892e62411946db7f07b0"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "itoa"
 version = "1.0.10"