Fix bug: EXCEPTION_ACCESS_VIOLATION (#71)

Update appveyor.yml

bof fix

- Fixed wrong calculation when adding comments larger than 512 chars which caused a BoF ( closes #53 )
- Added two new entries to the ntdll.api definition file

bug fixes

- fixed "small buffer" issue (crash) on large modules with long instructions. ( closes #43  and closes #47 )
- fixed huge amount of ram usage for extended analysis on modules with a big number of functions/parameters ( closes #44 )

Update appveyor.yml

updated to vs2017

version number updated

Changes to module analysis

- Used current selected disasm line for module analysis instead of cip
- Modified some typing in plugin entries
- Some code refactoring
- Modified command "xanal/xanalremove exe" to "xanal/xanalremove module"
- Closes #31

Update appveyor.yml

Merge branch 'master' of https://github.com/ThunderCls/xAnalyzer

Some Fixes

Fixes to the code pushed by @Herz3h