Fixes especially for breakpoint overlays

•Fix draw and erase of breakpoint and instruction pointer overlays.
•Fix opening and activating view with file at the top of stack.
•Combine all "scopes" into a single pane, rather than opening a new pane for every scope.
•Add Clear all breakpoints command
•Show keyboard shortcuts in the commands. (Need to figure out how to get Sublime to show them natively)
•List commands in a sensible non-random order
•Enable F5 for starting browser
•Much refactoring for stability (move operations to main thread) and to pave the way for new features
•Other misc stability fixes

Remove BOM causing Mac trouble

st3-1.6.2

Remove byte order marks

Bug fixes and UX streamline

• Responsiveness of clickable regions
• Clear scope on resume
• Clarify console prefixes and window titles
• Clear windows on startup
• Add new keyboard shortcuts
• Rename add/remove breakpoint to toggle breakpoint
• Enable against Internet Explorer

Bring up to date with fixes

Bring up to date with fixes
Change to prefixed-semantic-version format required by Sublime Package Control schema_version 3.0

Change to prefixed-semantic-version format required by Sublime Package Control schema_version 3.0

Change to prefixed-semantic-version format required by Sublime Package Control schema_version 3.0
No actual change made to ST2 branch.