fix(types): some issues found in pl definitions

types/pl.d.tl

@@ -4,11 +4,13 @@ local record pl
     -- and just reexported in the right file
 
     record List<T>
-        {T}
+      --   {T}
 
         new: function({T}): pl.List<T>
-        metamethod __call: function<T>(pl.List, {T}): pl.List<T>
+        metamethod __call: function<T>(any, {T}): pl.List<T>
         metamethod __concat: function(pl.List<T>, pl.List<T>): pl.List<T>
+        metamethod __len: function(pl.List<T>): number
+        metamethod __index: function(pl.List<T>, number): T
 
         range: function(number, number, number): pl.List<number>
         split: function(string, string): pl.List<string>
@@ -370,6 +372,8 @@ local record pl
     record file
         -- TODO copy declarations from other functions
         -- this whole module is just renaming of other functions
+        read: function(string, boolean): string | nil, string
+        write: function(filename: string, str: string, is_bin: boolean): boolean | nil, string
     end
 
     record func
@@ -902,6 +906,7 @@ local record pl
         filter: function<T>({T}, (function(T): boolean)): pl.List<T>
         filter: function<T, A>({T}, (function(T, A): boolean), A): pl.List<T>
 
+        foreach: function<T>({ T }, function(T))
         foreach: function<K, V>((function(V, K)), {K: V})
         foreach: function<K, V, A>((function(V, K, A)), {K: V}, A)
         foreachi: function<V>((function(V, number)), {V})
@@ -935,7 +940,7 @@ local record pl
             'debug'
         end
 
-        substitute: function(string, table): string
+        substitute: function(string, table): string, string, string
         compile: function(string, {pl.template.CompileOpt: any}): pl.template.CompiledTemplate, string, string
     end