Merge pull request #239 from gbmhunter/develop

Release of v3.5.4.

Merge pull request #238 from gbmhunter/develop

Release of v3.5.3.

Fixed bugs which were crashing the 'NTC Thermistor' and 'Dew Point (M…

…agnus Equation)' calculators.

Updated version to v3.5.1.

Added a donate button and version number.

Merge branch 'develop'

Fixed version number in CHANGELOG.

Removed all files in preparation for merge of new NinjaCalc.

Merge branch 'develop'

Merge branch 'develop'