Updates to unstable update site

Here's your monthly status update on recent changes to Vrapper's unstable update site:

• Added support for fold commands (za, zo, zc, zR, zM) in optional PyDev plugin
• Fixed issue so ex commands will reuse last search if no pattern is provided
• Fixed issue with Ctrl- keys when replaying a macro
• Fixed issue where switching visual modes reset selection
• Fixed issue with switching to search mode from a visual mode
• Fixed issue which required whitespace when defining a :move range
• Fixed issue with :d, :y, and :retab requiring line ranges
• Fixed issue with Ctrl-A incrementing numbers larger than 32-bits
• Other various refactoring (not tied to any specific defect)