Add julia.ado version check

reghdfejl.ado

@@ -1,4 +1,4 @@
-*! reghdfejl 0.4.2 7 December 2023
+*! reghdfejl 0.4.3 7 December 2023
 
 // The MIT License (MIT)
 //
@@ -29,6 +29,8 @@ cap program drop reghdfejl
 program define reghdfejl, eclass
   version 16
 
+  local JLVERSION 0.7.1
+
   if replay() {
 		if "`e(cmd)'" != "reghdfejl" error 301
 		if _by() error 190
@@ -66,7 +68,6 @@ program define reghdfejl, eclass
       di as res "  `reghdfeado' -> `dest'"
       di as res "  `r(fn)' -> `reghdfeado'"
     }
-    di as txt "The change will take effect after you restart Stata."
     exit 0
   }
 
@@ -88,6 +89,14 @@ program define reghdfejl, eclass
     exit 0
   }
 
+  jl version
+  if "`r(version)'" != "`JLVERSION'" {
+    di as txt "The Stata package julia is not up to date. Attempting to update it with {stata ssc install julia, replace}." _n
+    ssc install julia, replace
+    jl version
+    _assert "`r(version)'"=="`JLVERSION'", msg(Failed to install required version of the julia package.) rc(198)
+  }
+
 	syntax anything [if] [in] [aw pw iw/], [Absorb(string) Robust CLuster(string) vce(string) RESIDuals ITerations(integer 16000) gpu THReads(integer 0) ///
                                           noSAMPle TOLerance(real 1e-8) Level(real `c(level)') NOHEADer NOTABLE compact *]
   local sample = "`sample'"==""
@@ -480,4 +489,5 @@ end
 * 0.3.3 Fixed bugs in handling of interactions and constant term
 * 0.4.0 Added mask and unmask
 * 0.4.1 Properly handle varlists with -/?/*/~
-* 0.4.2 Set version minima for some packages
+* 0.4.2 Set version minima for some packages
+* 0.4.3 Add julia.ado version check