Fix etag generation and update to layer 186

This release fixes etag hash generation (also adding support for string values) and updates to layer 186.

New Methods:

• messages.sendPaidReaction
• messages.togglePaidReactionPrivacy
• payments.getStarsSubscriptions
• payments.changeStarsSubscription
• payments.fulfillStarsSubscription

Changed Methods:

• Added subscription_pricing param to messages.exportChatInvite
• Added subscription_expired param to messages.getChatInviteImporters
• Added paid_enabled param to messages.setChatAvailableReactions
• Added signatures_enabled param to channels.toggleSignatures
• Added profiles_enabled param to channels.toggleSignatures
• Removed enabled param from channels.toggleSignatures
• Added subscription_id param to payments.getStarsTransactions

New Constructors:

• inputFileStoryDocument
• channelAdminLogEventActionToggleSignatureProfiles
• inputInvoiceChatInviteSubscription
• reactionPaid
• starsSubscriptionPricing
• starsSubscription
• messageReactor

Changed Constructors:

• Added signature_profiles param to channel
• Added subscription_until_date param to channel
• Added paid_reactions_available param to channelFull
• Added subscription_expired param to chatInviteExported
• Added subscription_pricing param to chatInviteExported
• Added can_refulfill_subscription param to chatInvite
• Added subscription_pricing param to chatInvite
• Added subscription_form_id param to chatInvite
• Added privacy_policy_url param to botInfo
• Added subscription_until_date param to channelParticipant
• Added subscription_until_date param to channelParticipantSelf
• Added media param to sponsoredMessage
• Added top_reactors param to messageReactions
• Added reaction param to starsTransaction
• Added subscription_period param to starsTransaction
• Added subscriptions param to payments.starsStatus
• Added subscriptions_next_offset param to payments.starsStatus
• Added subscriptions_missing_balance param to payments.starsStatus