Use mimalloc memory allocator

Cargo.lock

@@ -1191,6 +1191,16 @@ dependencies = [
  "windows-targets 0.52.6",
 ]
 
+[[package]]
+name = "libmimalloc-sys"
+version = "0.1.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23aa6811d3bd4deb8a84dde645f943476d13b248d818edcf8ce0b2f37f036b44"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "libredox"
 version = "0.1.3"
@@ -1261,6 +1271,15 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "mimalloc"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68914350ae34959d83f732418d51e2427a794055d0b9529f48259ac07af65633"
+dependencies = [
+ "libmimalloc-sys",
+]
+
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
@@ -2307,6 +2326,7 @@ dependencies = [
  "log",
  "log-panics",
  "memmap2",
+ "mimalloc",
  "native-dialog",
  "normpath",
  "ntest",