Change mentions of Rakudo release 2019.01 → 2019.03

2019.01 did not come out.

doc/Type/Bag.pod6

@@ -77,7 +77,7 @@ Of course, you can also create a C<Bag> with the C<.new> method.
 
     my $breakfast = Bag.new( <spam eggs spam spam bacon spam> );
 
-Since 6.d (2019.01 and later) you can also use this syntax for parameterization
+Since 6.d (2019.03 and later) you can also use this syntax for parameterization
 of the C<Bag>, to specify which type of values are acceptable:
 
     # only allow strings (Str) in the Bag
@@ -93,7 +93,7 @@ Finally, you can create Bag masquerading as a hash by using the C<is> trait:
     say %b<a>;  # True
     say %b<d>;  # False
 
-Since 6.d (2019.01 and later), this syntax also allows you to specify the
+Since 6.d (2019.03 and later), this syntax also allows you to specify the
 type of values you would like to allow:
 
     # limit to strings

doc/Type/BagHash.pod6

@@ -81,7 +81,7 @@ You can also create C<BagHash> masquerading as a hash by using the C<is> trait:
     say %bh<b>;  # 2
     say %bh<d>;  # 0
 
-Since 6.d (2019.01 and later) it is also possible to specify the type of values
+Since 6.d (2019.03 and later) it is also possible to specify the type of values
 you would like to allow in a C<BagHash>.  This can either be done when calling
 C<.new>:
 

doc/Type/Mix.pod6

@@ -70,7 +70,7 @@ declare them; in that case, we can employ C<is> to declare their type:
     say %n.^name; # OUTPUT: «Mix␤»
     say %n;       # OUTPUT: «Mix(a(2), c(3.14))␤»
 
-Since 6.d (2019.01 and later) it is also possible to specify the type of values
+Since 6.d (2019.03 and later) it is also possible to specify the type of values
 you would like to allow in a C<Mix>.  This can either be done when calling
 C<.new>:
 

doc/Type/MixHash.pod6

@@ -66,7 +66,7 @@ the mix, and the (cumulative) values become the associated numeric weights:
     say $n.keys.map(&WHAT);  # OUTPUT: «((Str) (Str))␤»
     say $n.pairs;            # OUTPUT: «(a => 2 c => 3.14)␤»
 
-Since 6.d (2019.01 and later) it is also possible to specify the type of values
+Since 6.d (2019.03 and later) it is also possible to specify the type of values
 you would like to allow in a C<MixHash>.  This can either be done when calling
 C<.new>:
 

doc/Type/Parameter.pod6

@@ -286,7 +286,7 @@ If the parameter has a
 L<sub-signature|/type/Signature#Destructuring_Parameters>,
 returns a C<Signature> object for it.  Otherwise returns C<Any>.
 
-=head1 Runtime creation of Parameter objects (6.d, 2019.01 and later)
+=head1 Runtime creation of Parameter objects (6.d, 2019.03 and later)
 
    Parameter.new( ... )
 

doc/Type/Set.pod6

@@ -61,7 +61,7 @@ Of course, you can also create a C<Set> with the C<.new> method.
 
     my $fruits = Set.new( <peach apple orange apple apple> );
 
-Since 6.d (2019.01 and later) you can also use this syntax for parameterization
+Since 6.d (2019.03 and later) you can also use this syntax for parameterization
 of the C<Set>, to specify which type of values are acceptable:
 
     # only allow strings (Str) in the Set
@@ -77,7 +77,7 @@ Finally, you can create Set masquerading as a hash by using the C<is> trait:
     say %s<a>;  # True
     say %s<d>;  # False
 
-Since 6.d (2019.01 and later), this syntax also allows you to specify the
+Since 6.d (2019.03 and later), this syntax also allows you to specify the
 type of values you would like to allow:
 
     # limit to strings

doc/Type/SetHash.pod6

@@ -92,7 +92,7 @@ You can also create C<SetHash> masquerading as a hash by using the C<is> trait:
     say %sh<a>;  # True
     say %sh<d>;  # False
 
-Since 6.d (2019.01 and later) it is also possible to specify the type of values
+Since 6.d (2019.03 and later) it is also possible to specify the type of values
 you would like to allow in a C<SetHash>.  This can either be done when calling
 C<.new>:
 

doc/Type/Signature.pod6

@@ -1078,7 +1078,7 @@ Defined as:
 
 Throws C<X::Cannot::Capture>.
 
-=head1 Runtime creation of Signature objects (6.d, 2019.01 and later)
+=head1 Runtime creation of Signature objects (6.d, 2019.03 and later)
 
 =for code :preamble<role Type {}>
 Signature.new(params => (...), returns => Type, arity => 1, count => 1)