Merge pull request puremourning#148 from puremourning/cpptools-update

Remove workaround for broken cpptools

Merge pull request puremourning#142 from puremourning/tweaks

Tweaks

Note what diagnostics are required,

Clarify that Python 3.6 is required

closes puremourning#143

Fix tab creation when current buffer contains no file

Merge pull request puremourning#139 from puremourning/no-name

Don't create a new buffer when opening the vimspector tab

Merge pull request puremourning#134 from puremourning/docs-update

Document: splat, central config dirs

Clear exception breakpoints when calling ClearBreakpoints

Guess VIMSPECTOR_MI_DEBUGGER path

When creating a terminal window in neovim, use a new buffer

neovim's termopen() replaces the buffer object in the current window
with a terminal, internally, this completely breaks the buffer list.

Repro:
* Create test.vim:

```
vsplit
call termopen( '/bin/bash', { 'cwd': getcwd() } )
call bufload( expand( '<sfile>' ) )
```

Then:
* `nvim -Nu NONE test.vim`
* `:source %`

Error is "Invald buffer name 'test.vim'"

Anyway, the correct thing to do is to create a _new_ buffer before
making it into a terminal (vnew, new) rather than a split of the current
one. This was only working before because the CodeView window never had
any buffer in it and was broken by the change to use the current buffer
when staring debugging.

Fixes puremourning#131