doc/tutorial-advanced: fixed typos in custom computation example
doc/tutorial-advanced: removed redundant render keywords
fft: removed old commented pyfft code
fft: removed max_lmem_fft_size (not necessary, the current local size finding algorithm will handle these cases)
core/operation: fixed incorrect handling of transformations connected to nested computations
fft: added dummy kernel for problem size == 1
core/operation: removed forgotten debug print
test/test_core: added test case for nested computation
helpers: do not change the dictionary which was passed as a parameter
TODO: added task
fft.mako: removed unused variable
operation: added 'inplace' parameter (currently not in use)
fft: removed support_inplace option
TODO: added task
fft.mako: small generalisation
fft.mako: eradicating conditions in non-power-of-2 cases
fft.mako: further conditionals eradication, now for another loading branch
TODO: added tasks
fft.mako: condition eradication continues
core/transformation: fixed bug in wrap_value (reported by Thibault North)

For a scalar with a specific dtype, this dtype was ignored, and min_scalar_type() was used instead.