Change default InviteAge to 24 hours

Resolves #859

src/Discord.Net.Core/Entities/Channels/IGuildChannel.cs

@@ -20,7 +20,7 @@ namespace Discord
         /// <param name="maxAge"> The time (in seconds) until the invite expires. Set to null to never expire. </param>
         /// <param name="maxUses"> The max amount  of times this invite may be used. Set to null to have unlimited uses. </param>
         /// <param name="isTemporary"> If true, a user accepting this invite will be kicked from the guild after closing their client. </param>
-        Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 1800, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null);
+        Task<IInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = default(int?), bool isTemporary = false, bool isUnique = false, RequestOptions options = null);
         /// <summary> Returns a collection of all invites to this channel. </summary>
         Task<IReadOnlyCollection<IInviteMetadata>> GetInvitesAsync(RequestOptions options = null);
         

src/Discord.Net.Rest/Entities/Channels/RestGuildChannel.cs

@@ -119,7 +119,7 @@ namespace Discord.Rest
 
         public async Task<IReadOnlyCollection<RestInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
             => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
-        public async Task<RestInviteMetadata> CreateInviteAsync(int? maxAge = 3600, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+        public async Task<RestInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
             => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
 
         public override string ToString() => Name;

src/Discord.Net.Rpc/Entities/Channels/RpcGuildChannel.cs

@@ -51,7 +51,7 @@ namespace Discord.Rpc
 
         public async Task<IReadOnlyCollection<RestInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
             => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
-        public async Task<RestInviteMetadata> CreateInviteAsync(int? maxAge = 3600, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+        public async Task<RestInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
             => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
 
         public override string ToString() => Name;

src/Discord.Net.WebSocket/Entities/Channels/SocketGuildChannel.cs

@@ -113,7 +113,7 @@ namespace Discord.WebSocket
 
         public async Task<IReadOnlyCollection<RestInviteMetadata>> GetInvitesAsync(RequestOptions options = null)
             => await ChannelHelper.GetInvitesAsync(this, Discord, options).ConfigureAwait(false);
-        public async Task<RestInviteMetadata> CreateInviteAsync(int? maxAge = 3600, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
+        public async Task<RestInviteMetadata> CreateInviteAsync(int? maxAge = 86400, int? maxUses = null, bool isTemporary = false, bool isUnique = false, RequestOptions options = null)
             => await ChannelHelper.CreateInviteAsync(this, Discord, maxAge, maxUses, isTemporary, isUnique, options).ConfigureAwait(false);
 
         public new virtual SocketGuildUser GetUser(ulong id) => null;