DEVEL_BLOG.md in rspreadsheet-0.4.7 vs DEVEL_BLOG.md in rspreadsheet-0.4.8

@@ -7,9 +7,11 @@
   1. Make sure that necessary tools are installed. In debian based distros you may try this  `apt-get install make gcc`. In other distros, use their native way to install tool.
   2. Comment out `guard` and `guard-rspec` lines from gemfile if you use ruby version less than 2.2.1.
 
 ## Ideas/wishlist
 
+  * refactor Style and AutomaticStyle objects from CellFormat.
+  * introduce "speedup" option, which can for example skip all "safetest" (or it can be named $prudent = true/false)
   * make it configurable whether Time or DateTime will be used.
   * In future inntroduce syntax like `sheet.range('C3:E4')` for mass operations.
   * Trying to make row Enumerable - perhaps skipping empty or undefined cells.
   * Maybe insted two syntaxes for accessing cell, we make both of them do the same and return Proxy object which would act either as value or cell.
   * Document that there is a little distinction betwean RSpreadsheet and RSpreadsheet::Workbook. The former delegates everythink to the other.