Use "Waveform" as one word.
Switch to native Image.FromImage
Merge pull request #273 from SubtitleEdit/waveform

Use "Waveform" as one word.
Update Changelog.txt.
Add NHunspell NuGet package.
Use ILRepack to pack .NET libraries.
Add zlib.net NuGet package.
installer: Remove "Interop.QuartzTypeLib.dll" when upgrading.
Update "run_tabspace.bat" after the NuGet packages addition.