Fix thing selection animation for halo_width
Fix assertion in UndoListView

No longer pass -1 to wxListCtrl::EnsureVisible() function in order to fix the following assertion:
src/generic/listctrl.cpp(4072): assert "index >= 0 && (size_t)index < GetItemCount()" failed in EnsureVisible(): invalid index in EnsureVisible
Fix compilation warning in WolfArchive.cpp

Clang reported the following warning for findFileCasing() function:
control may reach end of non-void function [-Wreturn-type]
Fix compilation warning and potential memory leak in MapCheck class

Clang reported the following warning for any call to delete operator for instance of class derived from MapCheck:
delete called on 'MapCheck' that is abstract but has non-virtual destructor [-Wdelete-non-virtual-dtor]
Fix compilation warning in SetupWizardDialog

Clang reported the following warning for SetupWizardDialog::showPage() function:
comparison of unsigned expression < 0 is always false [-Wtautological-compare]
Fix compilation warning in ArchiveEntry

Clang reported the following warning for ArchiveEntry::importFile() function:
comparison of unsigned expression < 0 is always false [-Wtautological-compare]
Fix compilation warning in ArchivePanel

Clang reported the following warning for ArchivePanel::newEntry() function:
warning: '&&' within '||' [-Wlogical-op-parentheses]
Fix compilation warning in CSoundFile

Clang reported the following warning for CSoundFile::ReadAMF() function:
'memset' call operates on objects of type 'BYTE *' (aka 'unsigned char *') while the size is based on a different type 'BYTE **' (aka 'unsigned char **') [-Wsizeof-pointer-memaccess]
Merge pull request #138 from alexey-lysiuk/small-fixes

Several small fixes
Fix memory leaks in TextureXList

Release stored CTexture objects on destruction of TextureXList
Fix memory leaks in DoomJagSpriteDataFormat

Release uint16_t array before exiting DoomJagSpriteDataFormat::isThisFormat() function
Merge pull request #139 from alexey-lysiuk/fix_memory_leaks

Fix memory leaks
Merge branch 'master' of https://github.com/sirjuddington/SLADE.git
Some minor speed improvements when opening an entry

Don't refresh the toolbar if it isn't needed
Fix missing comma in zdoom languages definition
Fix TEXTURES modify offsets
Fixed a few errors in the map translator config.
Merge pull request #143 from Blue-Shadow/master

Fixed a few errors in the map translator config.
Wrap long text lines on info overlays

Line, sector and thing info overlays now make use of a new TextBox class to display the info lines, which will word wrap a line if it is too long to fit within its width. Should fix overlapping text for things with lots of flags etc.
Fix pause on colour change in text editor (Windows)

No idea why this fixes it, but it does. Hopefully won't cause any other slowdown