Fix release scripts

scripts/release-pkg.nu

@@ -78,7 +78,7 @@ let info = if $os == 'windows-latest' {
 } else {
     (do -i { ./musd -b }) | str join
 }
-if ($info | str trim | empty?) {
+if ($info | str trim | is-empty) {
     print $'(ansi r)Incompatible nu binary...(ansi reset)'
 } else { $info }
 
@@ -114,14 +114,14 @@ if $os in ['ubuntu-latest', 'macos-latest'] {
         7z a $archive *
         print $'archive: ---> ($archive)';
         let pkg = (ls -f $archive | get name)
-        if not ($pkg | empty?) {
+        if not ($pkg | is-empty) {
             echo $'::set-output name=archive::($pkg | get 0)'
         }
     }
 }
 
 def 'cargo-build-musd' [ options: string ] {
-    if ($options | str trim | empty?) {
+    if ($options | str trim | is-empty) {
         cargo rustc --bin $bin --target $target --release --features=static-link-openssl
     } else {
         cargo rustc --bin $bin --target $target --release --features=static-link-openssl $options

scripts/release-ssl.nu

@@ -93,7 +93,7 @@ let info = if $os == 'windows-latest' {
 } else {
     (do -i { ./musd -b }) | str join
 }
-if ($info | str trim | empty?) {
+if ($info | str trim | is-empty) {
     print $'(ansi r)Incompatible nu binary...(ansi reset)'
 } else { $info }
 
@@ -129,7 +129,7 @@ if $os in ['ubuntu-latest', 'macos-latest'] {
         7z a $archive *
         print $'archive: ---> ($archive)';
         let pkg = (ls -f $archive | get name)
-        if not ($pkg | empty?) {
+        if not ($pkg | is-empty) {
             echo $'::set-output name=archive::($pkg | get 0)'
         }
     }

scripts/release.nu

@@ -24,7 +24,7 @@ def 'release' [
   	exit 1
   }
   let statusCheck = (git status --porcelain)
-  if not ($statusCheck | empty?) {
+  if not ($statusCheck | is-empty) {
   	print $'You have uncommit changes, please commit them and try `release` again!(char nl)'
   	exit 1
   }