Set formater default output mode for spaces.

Default to "spaces before words" output in initialization, so code using
Plover 2.5.8 API is still compatible without the need to call
set_space_placement.
Fix minute briefs so they attach to the hour

For example, 4:15. Note that stroke 30BG was already correctly mapped to {^:30}; this brings the rest of the shortcuts in line with that.
Add some dictionary entries to fix issues that I have bumped into over the past few weeks.
Fixed lockups when typing in plover in sidewinder mode

winkeyboardcontrol KeyboardCapture no longer a thread of it's own. The HookKeyboard function needs to be called from the main thread and PumpMessages should not be called because the MainLoop will do this for us.
Merge pull request #201 from mighele/Lockup-Fixing

Fixed lockups when typing in plover in sidewinder mode
Merge pull request #202 from morinted/master

Add symbols from Learn Plover Lesson 7: Non-Letters
Merge pull request #194 from shayneholmes/fix-minutes-attachment

Fix minute briefs so they attach to the hour
Merge pull request #193 from benoit-pierre/formater-default-output-space-before

Set formater default output mode for spaces.
Merge pull request #195 from shayneholmes/minor-dictionary-cleanup

Add some dictionary entries to fix a couple issues