Update manual pages

doc/h2load.1

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-.TH "H2LOAD" "1" "Jan 21, 2019" "1.37.0-DEV" "nghttp2"
+.TH "H2LOAD" "1" "Mar 07, 2019" "1.37.0" "nghttp2"
 .SH NAME
 h2load \- HTTP/2 benchmarking tool
 .

doc/nghttp.1

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-.TH "NGHTTP" "1" "Jan 21, 2019" "1.37.0-DEV" "nghttp2"
+.TH "NGHTTP" "1" "Mar 07, 2019" "1.37.0" "nghttp2"
 .SH NAME
 nghttp \- HTTP/2 client
 .

doc/nghttpd.1

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-.TH "NGHTTPD" "1" "Jan 21, 2019" "1.37.0-DEV" "nghttp2"
+.TH "NGHTTPD" "1" "Mar 07, 2019" "1.37.0" "nghttp2"
 .SH NAME
 nghttpd \- HTTP/2 server
 .

doc/nghttpx.1

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 .
-.TH "NGHTTPX" "1" "Jan 21, 2019" "1.37.0-DEV" "nghttp2"
+.TH "NGHTTPX" "1" "Mar 07, 2019" "1.37.0" "nghttp2"
 .SH NAME
 nghttpx \- HTTP/2 proxy
 .
@@ -264,7 +264,8 @@ for  all addresses  which  share the  same <GROUP>.   If
 address  which  belongs  to  the  same  group  specifies
 "group\-weight",   its    weight   is   used.     If   no
 "group\-weight"  is  specified  for  all  addresses,  the
-weight of a group becomes 1.
+weight of a group becomes 1.  "group" and "group\-weight"
+are ignored if session affinity is enabled.
 .sp
 "weight=<N>"  parameter  specifies  the  weight  of  the
 backend  address  inside  a  group  which  this  address
@@ -272,7 +273,8 @@ belongs  to.  The  higher  weight  gets more  frequently
 selected by  the load balancing algorithm.   <N> must be
 [1,  256] inclusive.   The  weight 8  has  4 times  more
 weight  than weight  2.  If  this parameter  is omitted,
-weight becomes 1.
+weight  becomes  1.   "weight"  is  ignored  if  session
+affinity is enabled.
 .sp
 Since ";" and ":" are  used as delimiter, <PATTERN> must
 not  contain these  characters.  Since  ";" has  special

doc/nghttpx.1.rst

@@ -235,7 +235,6 @@ Connections
     pattern,            :option:`--backend-read-timeout`           and
     :option:`--backend-write-timeout` are used.
 
-
     "group=<GROUP>"  parameter specifies  the name  of group
     this backend address belongs to.  By default, it belongs
     to  the unnamed  default group.   The name  of group  is
@@ -249,7 +248,8 @@ Connections
     address  which  belongs  to  the  same  group  specifies
     "group-weight",   its    weight   is   used.     If   no
     "group-weight"  is  specified  for  all  addresses,  the
-    weight of a group becomes 1.
+    weight of a group becomes 1.  "group" and "group-weight"
+    are ignored if session affinity is enabled.
 
     "weight=<N>"  parameter  specifies  the  weight  of  the
     backend  address  inside  a  group  which  this  address
@@ -257,7 +257,8 @@ Connections
     selected by  the load balancing algorithm.   <N> must be
     [1,  256] inclusive.   The  weight 8  has  4 times  more
     weight  than weight  2.  If  this parameter  is omitted,
-    weight becomes 1.
+    weight  becomes  1.   "weight"  is  ignored  if  session
+    affinity is enabled.
 
     Since ";" and ":" are  used as delimiter, <PATTERN> must
     not  contain these  characters.  Since  ";" has  special