Fixes issue with off by one error when incrementing sort position field
Merge pull request #802 from littlejon/master

[Sortable] Fixes issue with off by one error when incrementing sort position field
Update doctrine-extensions-mapping-2-1.xsd

Fix bad schema for XML using upper
Merge pull request #804 from vpassapera/patch-1

Update doctrine-extensions-mapping-2-1.xsd
Update sluggable.md
Merge pull request #806 from lazyants/patch-1

Update sluggable.md
[timestampable] closes #767
[xsd] update based on #804
[sluggable] allow empty slug, closes #807
update readme
[Tree] Fix getting root nodes for materializedd path if 'path_starts_with_separator'
  or 'path_ends_with_separator' are changed against default
Typo fixes

- remove extra word
- add missing letter
- remove extra letter
Make sure the user knows that both annotations are required

I assume that every field would be tracked if I used the Loggable annotation only.
Merge pull request #811 from laurentChin/loggable_documentation_improvements

Loggable documentation improvements
Merge pull request #810 from Mordred/mp_separators

[Tree] Fix getting root nodes for materialized path
Implemented prefix/suffix options
Reverted path to autoloader
Merge pull request #813 from dirkluijk/master

Implemented prefix/suffix options [issue #812]
[softdeletable] Added timeAware option
[softdeletable] Improved SQL query of timeAware option