message: Update REST docs with new accessors
diff: @@ -52,6 +52,20 @@ With the /notxdetails/ option JSON response will only contain the transaction ha
  Given a block hash: returns <COUNT> amount of blockheaders in upward direction.
  Returns empty if the block doesn't exist or it isn't in the active chain.
  +#### Blockfilter Headers
  +`GET /rest/blockfilterheaders/<FILTERTYPE>/<COUNT>/<BLOCK-HASH>.<bin|hex|json>`
  +
  +Given a block hash: returns <COUNT> amount of blockfilter headers in upward
  +direction for the filter type <FILTERTYPE>.
  +Returns empty if the block doesn't exist or it isn't in the active chain.
  +
  +#### Blockfilters
  +`GET /rest/blockfilter/<FILTERTYPE>/<BLOCK-HASH>.<bin|hex|json>`
  +
  +Given a block hash: returns the block filter of the given block of type
  +<FILTERTYPE>.
  +Responds with 404 if the block doesn't exist.
  +
  #### Blockhash by height
  `GET /rest/blockhashbyheight/<HEIGHT>.<bin|hex|json>`
  